15916780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1019}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 37013760

約数和(自身を除く): 21096980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1019, 1420, 1562, 2038, 3124, 3905, 4076, 5095, 7810, 10190, 11209, 15620, 20380, 22418, 44836, 56045, 72349, 112090, 144698, 224180, 289396, 361745, 723490, 795839, 1446980, 1591678, 3183356, 3979195, 7958390, 15916780]

約数ペア:

[(1, 15916780), (2, 7958390), (4, 3979195), (5, 3183356), (10, 1591678), (11, 1446980), (20, 795839), (22, 723490), (44, 361745), (55, 289396), (71, 224180), (110, 144698), (142, 112090), (220, 72349), (284, 56045), (355, 44836), (710, 22418), (781, 20380), (1019, 15620), (1420, 11209), (1562, 10190), (2038, 7810), (3124, 5095), (3905, 4076)]