256869210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{658639}}^1$

素因数の和:658662

約数の個数: 32

約数和(自身を含む): 663909120

約数和(自身を除く): 407039910

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 658639, 1317278, 1975917, 3293195, 3951834, 6586390, 8562307, 9879585, 17124614, 19759170, 25686921, 42811535, 51373842, 85623070, 128434605, 256869210]

約数ペア:

[(1, 256869210), (2, 128434605), (3, 85623070), (5, 51373842), (6, 42811535), (10, 25686921), (13, 19759170), (15, 17124614), (26, 9879585), (30, 8562307), (39, 6586390), (65, 3951834), (78, 3293195), (130, 1975917), (195, 1317278), (390, 658639)]