256775790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{6421}}^1$

素因数の和:6505

約数の個数: 64

約数和(自身を含む): 651036672

約数和(自身を除く): 394260882

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 43, 62, 86, 93, 129, 155, 186, 215, 258, 310, 430, 465, 645, 930, 1290, 1333, 2666, 3999, 6421, 6665, 7998, 12842, 13330, 19263, 19995, 32105, 38526, 39990, 64210, 96315, 192630, 199051, 276103, 398102, 552206, 597153, 828309, 995255, 1194306, 1380515, 1656618, 1990510, 2761030, 2985765, 4141545, 5971530, 8283090, 8559193, 17118386, 25677579, 42795965, 51355158, 85591930, 128387895, 256775790]

約数ペア:

[(1, 256775790), (2, 128387895), (3, 85591930), (5, 51355158), (6, 42795965), (10, 25677579), (15, 17118386), (30, 8559193), (31, 8283090), (43, 5971530), (62, 4141545), (86, 2985765), (93, 2761030), (129, 1990510), (155, 1656618), (186, 1380515), (215, 1194306), (258, 995255), (310, 828309), (430, 597153), (465, 552206), (645, 398102), (930, 276103), (1290, 199051), (1333, 192630), (2666, 96315), (3999, 64210), (6421, 39990), (6665, 38526), (7998, 32105), (12842, 19995), (13330, 19263)]