217915740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{797}}^1$

素因数の和:857

約数の個数: 216

約数和(自身を含む): 794731392

約数和(自身を除く): 576815652

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 49, 60, 62, 63, 70, 84, 90, 93, 98, 105, 124, 126, 140, 147, 155, 180, 186, 196, 210, 217, 245, 252, 279, 294, 310, 315, 372, 420, 434, 441, 465, 490, 558, 588, 620, 630, 651, 735, 797, 868, 882, 930, 980, 1085, 1116, 1260, 1302, 1395, 1470, 1519, 1594, 1764, 1860, 1953, 2170, 2205, 2391, 2604, 2790, 2940, 3038, 3188, 3255, 3906, 3985, 4340, 4410, 4557, 4782, 5579, 5580, 6076, 6510, 7173, 7595, 7812, 7970, 8820, 9114, 9564, 9765, 11158, 11955, 13020, 13671, 14346, 15190, 15940, 16737, 18228, 19530, 22316, 22785, 23910, 24707, 27342, 27895, 28692, 30380, 33474, 35865, 39053, 39060, 45570, 47820, 49414, 50211, 54684, 55790, 66948, 68355, 71730, 74121, 78106, 83685, 91140, 98828, 100422, 111580, 117159, 123535, 136710, 143460, 148242, 156212, 167370, 172949, 195265, 200844, 222363, 234318, 247070, 251055, 273420, 296484, 334740, 345898, 351477, 370605, 390530, 444726, 468636, 494140, 502110, 518847, 585795, 691796, 702954, 741210, 781060, 864745, 889452, 1004220, 1037694, 1111815, 1171590, 1210643, 1405908, 1482420, 1556541, 1729490, 1757385, 2075388, 2223630, 2343180, 2421286, 2594235, 3113082, 3458980, 3514770, 3631929, 4447260, 4842572, 5188470, 6053215, 6226164, 7029540, 7263858, 7782705, 10376940, 10895787, 12106430, 14527716, 15565410, 18159645, 21791574, 24212860, 31130820, 36319290, 43583148, 54478935, 72638580, 108957870, 217915740]

約数ペア:

[(1, 217915740), (2, 108957870), (3, 72638580), (4, 54478935), (5, 43583148), (6, 36319290), (7, 31130820), (9, 24212860), (10, 21791574), (12, 18159645), (14, 15565410), (15, 14527716), (18, 12106430), (20, 10895787), (21, 10376940), (28, 7782705), (30, 7263858), (31, 7029540), (35, 6226164), (36, 6053215), (42, 5188470), (45, 4842572), (49, 4447260), (60, 3631929), (62, 3514770), (63, 3458980), (70, 3113082), (84, 2594235), (90, 2421286), (93, 2343180), (98, 2223630), (105, 2075388), (124, 1757385), (126, 1729490), (140, 1556541), (147, 1482420), (155, 1405908), (180, 1210643), (186, 1171590), (196, 1111815), (210, 1037694), (217, 1004220), (245, 889452), (252, 864745), (279, 781060), (294, 741210), (310, 702954), (315, 691796), (372, 585795), (420, 518847), (434, 502110), (441, 494140), (465, 468636), (490, 444726), (558, 390530), (588, 370605), (620, 351477), (630, 345898), (651, 334740), (735, 296484), (797, 273420), (868, 251055), (882, 247070), (930, 234318), (980, 222363), (1085, 200844), (1116, 195265), (1260, 172949), (1302, 167370), (1395, 156212), (1470, 148242), (1519, 143460), (1594, 136710), (1764, 123535), (1860, 117159), (1953, 111580), (2170, 100422), (2205, 98828), (2391, 91140), (2604, 83685), (2790, 78106), (2940, 74121), (3038, 71730), (3188, 68355), (3255, 66948), (3906, 55790), (3985, 54684), (4340, 50211), (4410, 49414), (4557, 47820), (4782, 45570), (5579, 39060), (5580, 39053), (6076, 35865), (6510, 33474), (7173, 30380), (7595, 28692), (7812, 27895), (7970, 27342), (8820, 24707), (9114, 23910), (9564, 22785), (9765, 22316), (11158, 19530), (11955, 18228), (13020, 16737), (13671, 15940), (14346, 15190)]