81978560

素因数分解:

$2^6\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1063}}^1$

素因数の和:1321

約数の個数: 56

約数和(自身を含む): 196205856

約数和(自身を除く): 114227296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 241, 320, 482, 964, 1063, 1205, 1928, 2126, 2410, 3856, 4252, 4820, 5315, 7712, 8504, 9640, 10630, 15424, 17008, 19280, 21260, 34016, 38560, 42520, 68032, 77120, 85040, 170080, 256183, 340160, 512366, 1024732, 1280915, 2049464, 2561830, 4098928, 5123660, 8197856, 10247320, 16395712, 20494640, 40989280, 81978560]

約数ペア:

[(1, 81978560), (2, 40989280), (4, 20494640), (5, 16395712), (8, 10247320), (10, 8197856), (16, 5123660), (20, 4098928), (32, 2561830), (40, 2049464), (64, 1280915), (80, 1024732), (160, 512366), (241, 340160), (320, 256183), (482, 170080), (964, 85040), (1063, 77120), (1205, 68032), (1928, 42520), (2126, 38560), (2410, 34016), (3856, 21260), (4252, 19280), (4820, 17008), (5315, 15424), (7712, 10630), (8504, 9640)]