21066360

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{809}}^1$

素因数の和:861

約数の個数: 128

約数和(自身を含む): 74649600

約数和(自身を除く): 53583240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 809, 840, 868, 930, 1085, 1240, 1302, 1618, 1736, 1860, 2170, 2427, 2604, 3236, 3255, 3720, 4045, 4340, 4854, 5208, 5663, 6472, 6510, 8090, 8680, 9708, 11326, 12135, 13020, 16180, 16989, 19416, 22652, 24270, 25079, 26040, 28315, 32360, 33978, 45304, 48540, 50158, 56630, 67956, 75237, 84945, 97080, 100316, 113260, 125395, 135912, 150474, 169890, 175553, 200632, 226520, 250790, 300948, 339780, 351106, 376185, 501580, 526659, 601896, 679560, 702212, 752370, 877765, 1003160, 1053318, 1404424, 1504740, 1755530, 2106636, 2633295, 3009480, 3511060, 4213272, 5266590, 7022120, 10533180, 21066360]

約数ペア:

[(1, 21066360), (2, 10533180), (3, 7022120), (4, 5266590), (5, 4213272), (6, 3511060), (7, 3009480), (8, 2633295), (10, 2106636), (12, 1755530), (14, 1504740), (15, 1404424), (20, 1053318), (21, 1003160), (24, 877765), (28, 752370), (30, 702212), (31, 679560), (35, 601896), (40, 526659), (42, 501580), (56, 376185), (60, 351106), (62, 339780), (70, 300948), (84, 250790), (93, 226520), (105, 200632), (120, 175553), (124, 169890), (140, 150474), (155, 135912), (168, 125395), (186, 113260), (210, 100316), (217, 97080), (248, 84945), (280, 75237), (310, 67956), (372, 56630), (420, 50158), (434, 48540), (465, 45304), (620, 33978), (651, 32360), (744, 28315), (809, 26040), (840, 25079), (868, 24270), (930, 22652), (1085, 19416), (1240, 16989), (1302, 16180), (1618, 13020), (1736, 12135), (1860, 11326), (2170, 9708), (2427, 8680), (2604, 8090), (3236, 6510), (3255, 6472), (3720, 5663), (4045, 5208), (4340, 4854)]