20125760

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{577}}^1$

素因数の和:703

約数の個数: 56

約数和(自身を含む): 48447960

約数和(自身を除く): 28322200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 545, 577, 872, 1090, 1154, 1744, 2180, 2308, 2885, 3488, 4360, 4616, 5770, 6976, 8720, 9232, 11540, 17440, 18464, 23080, 34880, 36928, 46160, 62893, 92320, 125786, 184640, 251572, 314465, 503144, 628930, 1006288, 1257860, 2012576, 2515720, 4025152, 5031440, 10062880, 20125760]

約数ペア:

[(1, 20125760), (2, 10062880), (4, 5031440), (5, 4025152), (8, 2515720), (10, 2012576), (16, 1257860), (20, 1006288), (32, 628930), (40, 503144), (64, 314465), (80, 251572), (109, 184640), (160, 125786), (218, 92320), (320, 62893), (436, 46160), (545, 36928), (577, 34880), (872, 23080), (1090, 18464), (1154, 17440), (1744, 11540), (2180, 9232), (2308, 8720), (2885, 6976), (3488, 5770), (4360, 4616)]