38939960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15959}}^1$

素因数の和:16031

約数の個数: 32

約数和(自身を含む): 89056800

約数和(自身を除く): 50116840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 15959, 31918, 63836, 79795, 127672, 159590, 319180, 638360, 973499, 1946998, 3893996, 4867495, 7787992, 9734990, 19469980, 38939960]

約数ペア:

[(1, 38939960), (2, 19469980), (4, 9734990), (5, 7787992), (8, 4867495), (10, 3893996), (20, 1946998), (40, 973499), (61, 638360), (122, 319180), (244, 159590), (305, 127672), (488, 79795), (610, 63836), (1220, 31918), (2440, 15959)]