21365820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{547}}^1$

素因数の和:600

約数の個数: 144

約数和(自身を含む): 76597248

約数和(自身を除く): 55231428

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, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 547, 558, 620, 630, 651, 868, 930, 1085, 1094, 1116, 1260, 1302, 1395, 1641, 1860, 1953, 2170, 2188, 2604, 2735, 2790, 3255, 3282, 3829, 3906, 4340, 4923, 5470, 5580, 6510, 6564, 7658, 7812, 8205, 9765, 9846, 10940, 11487, 13020, 15316, 16410, 16957, 19145, 19530, 19692, 22974, 24615, 32820, 33914, 34461, 38290, 39060, 45948, 49230, 50871, 57435, 67828, 68922, 76580, 84785, 98460, 101742, 114870, 118699, 137844, 152613, 169570, 172305, 203484, 229740, 237398, 254355, 305226, 339140, 344610, 356097, 474796, 508710, 593495, 610452, 689220, 712194, 763065, 1017420, 1068291, 1186990, 1424388, 1526130, 1780485, 2136582, 2373980, 3052260, 3560970, 4273164, 5341455, 7121940, 10682910, 21365820]

約数ペア:

[(1, 21365820), (2, 10682910), (3, 7121940), (4, 5341455), (5, 4273164), (6, 3560970), (7, 3052260), (9, 2373980), (10, 2136582), (12, 1780485), (14, 1526130), (15, 1424388), (18, 1186990), (20, 1068291), (21, 1017420), (28, 763065), (30, 712194), (31, 689220), (35, 610452), (36, 593495), (42, 508710), (45, 474796), (60, 356097), (62, 344610), (63, 339140), (70, 305226), (84, 254355), (90, 237398), (93, 229740), (105, 203484), (124, 172305), (126, 169570), (140, 152613), (155, 137844), (180, 118699), (186, 114870), (210, 101742), (217, 98460), (252, 84785), (279, 76580), (310, 68922), (315, 67828), (372, 57435), (420, 50871), (434, 49230), (465, 45948), (547, 39060), (558, 38290), (620, 34461), (630, 33914), (651, 32820), (868, 24615), (930, 22974), (1085, 19692), (1094, 19530), (1116, 19145), (1260, 16957), (1302, 16410), (1395, 15316), (1641, 13020), (1860, 11487), (1953, 10940), (2170, 9846), (2188, 9765), (2604, 8205), (2735, 7812), (2790, 7658), (3255, 6564), (3282, 6510), (3829, 5580), (3906, 5470), (4340, 4923)]