21208258160

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{577}}^1\times {\mathrm{14821}}^1$

素因数の和:15442

約数の個数: 80

約数和(自身を含む): 50991474432

約数和(自身を除く): 29783216272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 577, 620, 1154, 1240, 2308, 2480, 2885, 4616, 5770, 9232, 11540, 14821, 17887, 23080, 29642, 35774, 46160, 59284, 71548, 74105, 89435, 118568, 143096, 148210, 178870, 237136, 286192, 296420, 357740, 459451, 592840, 715480, 918902, 1185680, 1430960, 1837804, 2297255, 3675608, 4594510, 7351216, 8551717, 9189020, 17103434, 18378040, 34206868, 36756080, 42758585, 68413736, 85517170, 136827472, 171034340, 265103227, 342068680, 530206454, 684137360, 1060412908, 1325516135, 2120825816, 2651032270, 4241651632, 5302064540, 10604129080, 21208258160]

約数ペア:

[(1, 21208258160), (2, 10604129080), (4, 5302064540), (5, 4241651632), (8, 2651032270), (10, 2120825816), (16, 1325516135), (20, 1060412908), (31, 684137360), (40, 530206454), (62, 342068680), (80, 265103227), (124, 171034340), (155, 136827472), (248, 85517170), (310, 68413736), (496, 42758585), (577, 36756080), (620, 34206868), (1154, 18378040), (1240, 17103434), (2308, 9189020), (2480, 8551717), (2885, 7351216), (4616, 4594510), (5770, 3675608), (9232, 2297255), (11540, 1837804), (14821, 1430960), (17887, 1185680), (23080, 918902), (29642, 715480), (35774, 592840), (46160, 459451), (59284, 357740), (71548, 296420), (74105, 286192), (89435, 237136), (118568, 178870), (143096, 148210)]