21443940

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 240

約数和(自身を含む): 80661504

約数和(自身を除く): 59217564

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 31, 35, 36, 42, 45, 54, 60, 61, 62, 63, 70, 81, 84, 90, 93, 105, 108, 122, 124, 126, 135, 140, 155, 162, 180, 183, 186, 189, 210, 217, 244, 252, 270, 279, 305, 310, 315, 324, 366, 372, 378, 405, 420, 427, 434, 465, 540, 549, 558, 567, 610, 620, 630, 651, 732, 756, 810, 837, 854, 868, 915, 930, 945, 1085, 1098, 1116, 1134, 1220, 1260, 1281, 1302, 1395, 1620, 1647, 1674, 1708, 1830, 1860, 1890, 1891, 1953, 2135, 2170, 2196, 2268, 2511, 2562, 2604, 2745, 2790, 2835, 3255, 3294, 3348, 3660, 3780, 3782, 3843, 3906, 4185, 4270, 4340, 4941, 5022, 5124, 5490, 5580, 5670, 5673, 5859, 6405, 6510, 6588, 7564, 7686, 7812, 8235, 8370, 8540, 9455, 9765, 9882, 10044, 10980, 11340, 11346, 11529, 11718, 12555, 12810, 13020, 13237, 15372, 16470, 16740, 17019, 17577, 18910, 19215, 19530, 19764, 22692, 23058, 23436, 24705, 25110, 25620, 26474, 28365, 29295, 32940, 34038, 34587, 35154, 37820, 38430, 39060, 39711, 46116, 49410, 50220, 51057, 52948, 56730, 57645, 58590, 66185, 68076, 69174, 70308, 76860, 79422, 85095, 87885, 98820, 102114, 113460, 115290, 117180, 119133, 132370, 138348, 153171, 158844, 170190, 172935, 175770, 198555, 204228, 230580, 238266, 255285, 264740, 306342, 340380, 345870, 351540, 357399, 397110, 476532, 510570, 595665, 612684, 691740, 714798, 765855, 794220, 1021140, 1072197, 1191330, 1429596, 1531710, 1786995, 2144394, 2382660, 3063420, 3573990, 4288788, 5360985, 7147980, 10721970, 21443940]

約数ペア:

[(1, 21443940), (2, 10721970), (3, 7147980), (4, 5360985), (5, 4288788), (6, 3573990), (7, 3063420), (9, 2382660), (10, 2144394), (12, 1786995), (14, 1531710), (15, 1429596), (18, 1191330), (20, 1072197), (21, 1021140), (27, 794220), (28, 765855), (30, 714798), (31, 691740), (35, 612684), (36, 595665), (42, 510570), (45, 476532), (54, 397110), (60, 357399), (61, 351540), (62, 345870), (63, 340380), (70, 306342), (81, 264740), (84, 255285), (90, 238266), (93, 230580), (105, 204228), (108, 198555), (122, 175770), (124, 172935), (126, 170190), (135, 158844), (140, 153171), (155, 138348), (162, 132370), (180, 119133), (183, 117180), (186, 115290), (189, 113460), (210, 102114), (217, 98820), (244, 87885), (252, 85095), (270, 79422), (279, 76860), (305, 70308), (310, 69174), (315, 68076), (324, 66185), (366, 58590), (372, 57645), (378, 56730), (405, 52948), (420, 51057), (427, 50220), (434, 49410), (465, 46116), (540, 39711), (549, 39060), (558, 38430), (567, 37820), (610, 35154), (620, 34587), (630, 34038), (651, 32940), (732, 29295), (756, 28365), (810, 26474), (837, 25620), (854, 25110), (868, 24705), (915, 23436), (930, 23058), (945, 22692), (1085, 19764), (1098, 19530), (1116, 19215), (1134, 18910), (1220, 17577), (1260, 17019), (1281, 16740), (1302, 16470), (1395, 15372), (1620, 13237), (1647, 13020), (1674, 12810), (1708, 12555), (1830, 11718), (1860, 11529), (1890, 11346), (1891, 11340), (1953, 10980), (2135, 10044), (2170, 9882), (2196, 9765), (2268, 9455), (2511, 8540), (2562, 8370), (2604, 8235), (2745, 7812), (2790, 7686), (2835, 7564), (3255, 6588), (3294, 6510), (3348, 6405), (3660, 5859), (3780, 5673), (3782, 5670), (3843, 5580), (3906, 5490), (4185, 5124), (4270, 5022), (4340, 4941)]