70988180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2099}}^1$

素因数の和:2216

約数の個数: 48

約数和(自身を含む): 158760000

約数和(自身を除く): 87771820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 890, 1691, 1780, 2099, 3382, 4198, 6764, 8396, 8455, 10495, 16910, 20990, 33820, 39881, 41980, 79762, 159524, 186811, 199405, 373622, 398810, 747244, 797620, 934055, 1868110, 3549409, 3736220, 7098818, 14197636, 17747045, 35494090, 70988180]

約数ペア:

[(1, 70988180), (2, 35494090), (4, 17747045), (5, 14197636), (10, 7098818), (19, 3736220), (20, 3549409), (38, 1868110), (76, 934055), (89, 797620), (95, 747244), (178, 398810), (190, 373622), (356, 199405), (380, 186811), (445, 159524), (890, 79762), (1691, 41980), (1780, 39881), (2099, 33820), (3382, 20990), (4198, 16910), (6764, 10495), (8396, 8455)]