21265560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3109}}^1$

素因数の和:3145

約数の個数: 96

約数和(自身を含む): 72774000

約数和(自身を除く): 51508440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 171, 180, 190, 228, 285, 342, 360, 380, 456, 570, 684, 760, 855, 1140, 1368, 1710, 2280, 3109, 3420, 6218, 6840, 9327, 12436, 15545, 18654, 24872, 27981, 31090, 37308, 46635, 55962, 59071, 62180, 74616, 93270, 111924, 118142, 124360, 139905, 177213, 186540, 223848, 236284, 279810, 295355, 354426, 373080, 472568, 531639, 559620, 590710, 708852, 886065, 1063278, 1119240, 1181420, 1417704, 1772130, 2126556, 2362840, 2658195, 3544260, 4253112, 5316390, 7088520, 10632780, 21265560]

約数ペア:

[(1, 21265560), (2, 10632780), (3, 7088520), (4, 5316390), (5, 4253112), (6, 3544260), (8, 2658195), (9, 2362840), (10, 2126556), (12, 1772130), (15, 1417704), (18, 1181420), (19, 1119240), (20, 1063278), (24, 886065), (30, 708852), (36, 590710), (38, 559620), (40, 531639), (45, 472568), (57, 373080), (60, 354426), (72, 295355), (76, 279810), (90, 236284), (95, 223848), (114, 186540), (120, 177213), (152, 139905), (171, 124360), (180, 118142), (190, 111924), (228, 93270), (285, 74616), (342, 62180), (360, 59071), (380, 55962), (456, 46635), (570, 37308), (684, 31090), (760, 27981), (855, 24872), (1140, 18654), (1368, 15545), (1710, 12436), (2280, 9327), (3109, 6840), (3420, 6218)]