208515385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{1223}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 280482048

約数和(自身を除く): 71966663

約数列:

[1, 5, 13, 43, 61, 65, 215, 305, 559, 793, 1223, 2623, 2795, 3965, 6115, 13115, 15899, 34099, 52589, 74603, 79495, 170495, 262945, 373015, 683657, 969839, 3207929, 3418285, 4849195, 16039645, 41703077, 208515385]

約数ペア:

[(1, 208515385), (5, 41703077), (13, 16039645), (43, 4849195), (61, 3418285), (65, 3207929), (215, 969839), (305, 683657), (559, 373015), (793, 262945), (1223, 170495), (2623, 79495), (2795, 74603), (3965, 52589), (6115, 34099), (13115, 15899)]