1640422490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{1571}}^1\times {\mathrm{2131}}^1$

素因数の和:3723

約数の個数: 48

約数和(自身を含む): 3438643104

約数和(自身を除く): 1798220614

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 1571, 2131, 3142, 4262, 7855, 10655, 10997, 14917, 15710, 21310, 21994, 29834, 54985, 74585, 76979, 104419, 109970, 149170, 153958, 208838, 384895, 522095, 769790, 1044190, 3347801, 6695602, 16739005, 23434607, 33478010, 46869214, 117173035, 164042249, 234346070, 328084498, 820211245, 1640422490]

約数ペア:

[(1, 1640422490), (2, 820211245), (5, 328084498), (7, 234346070), (10, 164042249), (14, 117173035), (35, 46869214), (49, 33478010), (70, 23434607), (98, 16739005), (245, 6695602), (490, 3347801), (1571, 1044190), (2131, 769790), (3142, 522095), (4262, 384895), (7855, 208838), (10655, 153958), (10997, 149170), (14917, 109970), (15710, 104419), (21310, 76979), (21994, 74585), (29834, 54985)]