640913745

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{659}}^1\times {\mathrm{2819}}^1$

素因数の和:3509

約数の個数: 32

約数和(自身を含む): 1072051200

約数和(自身を除く): 431137455

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 659, 1977, 2819, 3295, 8457, 9885, 14095, 15157, 42285, 45471, 64837, 75785, 194511, 227355, 324185, 972555, 1857721, 5573163, 9288605, 27865815, 42727583, 128182749, 213637915, 640913745]

約数ペア:

[(1, 640913745), (3, 213637915), (5, 128182749), (15, 42727583), (23, 27865815), (69, 9288605), (115, 5573163), (345, 1857721), (659, 972555), (1977, 324185), (2819, 227355), (3295, 194511), (8457, 75785), (9885, 64837), (14095, 45471), (15157, 42285)]