2987908

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 6652800

約数和(自身を除く): 3664892

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 89, 109, 154, 178, 218, 308, 356, 436, 623, 763, 979, 1199, 1246, 1526, 1958, 2398, 2492, 3052, 3916, 4796, 6853, 8393, 9701, 13706, 16786, 19402, 27412, 33572, 38804, 67907, 106711, 135814, 213422, 271628, 426844, 746977, 1493954, 2987908]

約数ペア:

[(1, 2987908), (2, 1493954), (4, 746977), (7, 426844), (11, 271628), (14, 213422), (22, 135814), (28, 106711), (44, 67907), (77, 38804), (89, 33572), (109, 27412), (154, 19402), (178, 16786), (218, 13706), (308, 9701), (356, 8393), (436, 6853), (623, 4796), (763, 3916), (979, 3052), (1199, 2492), (1246, 2398), (1526, 1958)]