40204580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{647}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 91445760

約数和(自身を除く): 51241180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 239, 260, 478, 647, 956, 1195, 1294, 2390, 2588, 3107, 3235, 4780, 6214, 6470, 8411, 12428, 12940, 15535, 16822, 31070, 33644, 42055, 62140, 84110, 154633, 168220, 309266, 618532, 773165, 1546330, 2010229, 3092660, 4020458, 8040916, 10051145, 20102290, 40204580]

約数ペア:

[(1, 40204580), (2, 20102290), (4, 10051145), (5, 8040916), (10, 4020458), (13, 3092660), (20, 2010229), (26, 1546330), (52, 773165), (65, 618532), (130, 309266), (239, 168220), (260, 154633), (478, 84110), (647, 62140), (956, 42055), (1195, 33644), (1294, 31070), (2390, 16822), (2588, 15535), (3107, 12940), (3235, 12428), (4780, 8411), (6214, 6470)]