249498210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{639739}}^1$

素因数の和:639762

約数の個数: 32

約数和(自身を含む): 644857920

約数和(自身を除く): 395359710

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 639739, 1279478, 1919217, 3198695, 3838434, 6397390, 8316607, 9596085, 16633214, 19192170, 24949821, 41583035, 49899642, 83166070, 124749105, 249498210]

約数ペア:

[(1, 249498210), (2, 124749105), (3, 83166070), (5, 49899642), (6, 41583035), (10, 24949821), (13, 19192170), (15, 16633214), (26, 9596085), (30, 8316607), (39, 6397390), (65, 3838434), (78, 3198695), (130, 1919217), (195, 1279478), (390, 639739)]