4268440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 10692000

約数和(自身を除く): 6423560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 109, 110, 178, 218, 220, 356, 436, 440, 445, 545, 712, 872, 890, 979, 1090, 1199, 1780, 1958, 2180, 2398, 3560, 3916, 4360, 4796, 4895, 5995, 7832, 9592, 9701, 9790, 11990, 19402, 19580, 23980, 38804, 39160, 47960, 48505, 77608, 97010, 106711, 194020, 213422, 388040, 426844, 533555, 853688, 1067110, 2134220, 4268440]

約数ペア:

[(1, 4268440), (2, 2134220), (4, 1067110), (5, 853688), (8, 533555), (10, 426844), (11, 388040), (20, 213422), (22, 194020), (40, 106711), (44, 97010), (55, 77608), (88, 48505), (89, 47960), (109, 39160), (110, 38804), (178, 23980), (218, 19580), (220, 19402), (356, 11990), (436, 9790), (440, 9701), (445, 9592), (545, 7832), (712, 5995), (872, 4895), (890, 4796), (979, 4360), (1090, 3916), (1199, 3560), (1780, 2398), (1958, 2180)]