68400880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{27581}}^1$

素因数の和:27625

約数の個数: 40

約数和(自身を含む): 164168064

約数和(自身を除く): 95767184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 27581, 55162, 110324, 137905, 220648, 275810, 441296, 551620, 855011, 1103240, 1710022, 2206480, 3420044, 4275055, 6840088, 8550110, 13680176, 17100220, 34200440, 68400880]

約数ペア:

[(1, 68400880), (2, 34200440), (4, 17100220), (5, 13680176), (8, 8550110), (10, 6840088), (16, 4275055), (20, 3420044), (31, 2206480), (40, 1710022), (62, 1103240), (80, 855011), (124, 551620), (155, 441296), (248, 275810), (310, 220648), (496, 137905), (620, 110324), (1240, 55162), (2480, 27581)]