20345560

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{233}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 48016800

約数和(自身を除く): 27671240

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 59, 74, 118, 148, 185, 233, 236, 295, 296, 370, 466, 472, 590, 740, 932, 1165, 1180, 1480, 1864, 2183, 2330, 2360, 4366, 4660, 8621, 8732, 9320, 10915, 13747, 17242, 17464, 21830, 27494, 34484, 43105, 43660, 54988, 68735, 68968, 86210, 87320, 109976, 137470, 172420, 274940, 344840, 508639, 549880, 1017278, 2034556, 2543195, 4069112, 5086390, 10172780, 20345560]

約数ペア:

[(1, 20345560), (2, 10172780), (4, 5086390), (5, 4069112), (8, 2543195), (10, 2034556), (20, 1017278), (37, 549880), (40, 508639), (59, 344840), (74, 274940), (118, 172420), (148, 137470), (185, 109976), (233, 87320), (236, 86210), (295, 68968), (296, 68735), (370, 54988), (466, 43660), (472, 43105), (590, 34484), (740, 27494), (932, 21830), (1165, 17464), (1180, 17242), (1480, 13747), (1864, 10915), (2183, 9320), (2330, 8732), (2360, 8621), (4366, 4660)]