65340280

素因数分解:

$2^3\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1801}}^1$

素因数の和:2719

約数の個数: 32

約数和(自身を含む): 147259440

約数和(自身を除く): 81919160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 907, 1801, 1814, 3602, 3628, 4535, 7204, 7256, 9005, 9070, 14408, 18010, 18140, 36020, 36280, 72040, 1633507, 3267014, 6534028, 8167535, 13068056, 16335070, 32670140, 65340280]

約数ペア:

[(1, 65340280), (2, 32670140), (4, 16335070), (5, 13068056), (8, 8167535), (10, 6534028), (20, 3267014), (40, 1633507), (907, 72040), (1801, 36280), (1814, 36020), (3602, 18140), (3628, 18010), (4535, 14408), (7204, 9070), (7256, 9005)]