256750990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43591}}^1$

素因数の和:43648

約数の個数: 32

約数和(自身を含む): 502179840

約数和(自身を除く): 245428850

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 155, 190, 310, 589, 1178, 2945, 5890, 43591, 87182, 217955, 435910, 828229, 1351321, 1656458, 2702642, 4141145, 6756605, 8282290, 13513210, 25675099, 51350198, 128375495, 256750990]

約数ペア:

[(1, 256750990), (2, 128375495), (5, 51350198), (10, 25675099), (19, 13513210), (31, 8282290), (38, 6756605), (62, 4141145), (95, 2702642), (155, 1656458), (190, 1351321), (310, 828229), (589, 435910), (1178, 217955), (2945, 87182), (5890, 43591)]