678741880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{413867}}^1$

素因数の和:413919

約数の個数: 32

約数和(自身を含む): 1564421040

約数和(自身を除く): 885679160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 413867, 827734, 1655468, 2069335, 3310936, 4138670, 8277340, 16554680, 16968547, 33937094, 67874188, 84842735, 135748376, 169685470, 339370940, 678741880]

約数ペア:

[(1, 678741880), (2, 339370940), (4, 169685470), (5, 135748376), (8, 84842735), (10, 67874188), (20, 33937094), (40, 16968547), (41, 16554680), (82, 8277340), (164, 4138670), (205, 3310936), (328, 2069335), (410, 1655468), (820, 827734), (1640, 413867)]