21369985

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{701}}^1$

素因数の和:793

約数の個数: 32

約数和(自身を含む): 32078592

約数和(自身を除く): 10708607

約数列:

[1, 5, 7, 13, 35, 65, 67, 91, 335, 455, 469, 701, 871, 2345, 3505, 4355, 4907, 6097, 9113, 24535, 30485, 45565, 46967, 63791, 234835, 318955, 328769, 610571, 1643845, 3052855, 4273997, 21369985]

約数ペア:

[(1, 21369985), (5, 4273997), (7, 3052855), (13, 1643845), (35, 610571), (65, 328769), (67, 318955), (91, 234835), (335, 63791), (455, 46967), (469, 45565), (701, 30485), (871, 24535), (2345, 9113), (3505, 6097), (4355, 4907)]