389699380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{10831}}^1$

素因数の和:11104

約数の個数: 48

約数和(自身を含む): 939004416

約数和(自身を除く): 549305036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 514, 1028, 1285, 1799, 2570, 3598, 5140, 7196, 8995, 10831, 17990, 21662, 35980, 43324, 54155, 75817, 108310, 151634, 216620, 303268, 379085, 758170, 1516340, 2783567, 5567134, 11134268, 13917835, 19484969, 27835670, 38969938, 55671340, 77939876, 97424845, 194849690, 389699380]

約数ペア:

[(1, 389699380), (2, 194849690), (4, 97424845), (5, 77939876), (7, 55671340), (10, 38969938), (14, 27835670), (20, 19484969), (28, 13917835), (35, 11134268), (70, 5567134), (140, 2783567), (257, 1516340), (514, 758170), (1028, 379085), (1285, 303268), (1799, 216620), (2570, 151634), (3598, 108310), (5140, 75817), (7196, 54155), (8995, 43324), (10831, 35980), (17990, 21662)]