9966220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 23133600

約数和(自身を除く): 13167380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 509, 890, 979, 1018, 1780, 1958, 2036, 2545, 3916, 4895, 5090, 5599, 9790, 10180, 11198, 19580, 22396, 27995, 45301, 55990, 90602, 111980, 181204, 226505, 453010, 498311, 906020, 996622, 1993244, 2491555, 4983110, 9966220]

約数ペア:

[(1, 9966220), (2, 4983110), (4, 2491555), (5, 1993244), (10, 996622), (11, 906020), (20, 498311), (22, 453010), (44, 226505), (55, 181204), (89, 111980), (110, 90602), (178, 55990), (220, 45301), (356, 27995), (445, 22396), (509, 19580), (890, 11198), (979, 10180), (1018, 9790), (1780, 5599), (1958, 5090), (2036, 4895), (2545, 3916)]