640614

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:252

約数の個数: 32

約数和(自身を含む): 1419264

約数和(自身を除く): 778650

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 129, 191, 258, 382, 559, 573, 1118, 1146, 1677, 2483, 3354, 4966, 7449, 8213, 14898, 16426, 24639, 49278, 106769, 213538, 320307, 640614]

約数ペア:

[(1, 640614), (2, 320307), (3, 213538), (6, 106769), (13, 49278), (26, 24639), (39, 16426), (43, 14898), (78, 8213), (86, 7449), (129, 4966), (191, 3354), (258, 2483), (382, 1677), (559, 1146), (573, 1118)]