100728940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1621}}^1$

素因数の和:1882

約数の個数: 48

約数和(自身を含む): 228896640

約数和(自身を除く): 128167700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 239, 260, 478, 956, 1195, 1621, 2390, 3107, 3242, 4780, 6214, 6484, 8105, 12428, 15535, 16210, 21073, 31070, 32420, 42146, 62140, 84292, 105365, 210730, 387419, 421460, 774838, 1549676, 1937095, 3874190, 5036447, 7748380, 10072894, 20145788, 25182235, 50364470, 100728940]

約数ペア:

[(1, 100728940), (2, 50364470), (4, 25182235), (5, 20145788), (10, 10072894), (13, 7748380), (20, 5036447), (26, 3874190), (52, 1937095), (65, 1549676), (130, 774838), (239, 421460), (260, 387419), (478, 210730), (956, 105365), (1195, 84292), (1621, 62140), (2390, 42146), (3107, 32420), (3242, 31070), (4780, 21073), (6214, 16210), (6484, 15535), (8105, 12428)]