28657630

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:588

約数の個数: 32

約数和(自身を含む): 53071200

約数和(自身を除く): 24413570

約数列:

[1, 2, 5, 10, 53, 106, 139, 265, 278, 389, 530, 695, 778, 1390, 1945, 3890, 7367, 14734, 20617, 36835, 41234, 54071, 73670, 103085, 108142, 206170, 270355, 540710, 2865763, 5731526, 14328815, 28657630]

約数ペア:

[(1, 28657630), (2, 14328815), (5, 5731526), (10, 2865763), (53, 540710), (106, 270355), (139, 206170), (265, 108142), (278, 103085), (389, 73670), (530, 54071), (695, 41234), (778, 36835), (1390, 20617), (1945, 14734), (3890, 7367)]