129388220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1621}}^1$

素因数の和:1950

約数の個数: 48

約数和(自身を含む): 293750688

約数和(自身を除く): 164362468

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 307, 614, 1228, 1535, 1621, 3070, 3242, 3991, 6140, 6484, 7982, 8105, 15964, 16210, 19955, 21073, 32420, 39910, 42146, 79820, 84292, 105365, 210730, 421460, 497647, 995294, 1990588, 2488235, 4976470, 6469411, 9952940, 12938822, 25877644, 32347055, 64694110, 129388220]

約数ペア:

[(1, 129388220), (2, 64694110), (4, 32347055), (5, 25877644), (10, 12938822), (13, 9952940), (20, 6469411), (26, 4976470), (52, 2488235), (65, 1990588), (130, 995294), (260, 497647), (307, 421460), (614, 210730), (1228, 105365), (1535, 84292), (1621, 79820), (3070, 42146), (3242, 39910), (3991, 32420), (6140, 21073), (6484, 19955), (7982, 16210), (8105, 15964)]