18766280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 27198520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 151, 239, 260, 302, 478, 520, 604, 755, 956, 1195, 1208, 1510, 1912, 1963, 2390, 3020, 3107, 3926, 4780, 6040, 6214, 7852, 9560, 9815, 12428, 15535, 15704, 19630, 24856, 31070, 36089, 39260, 62140, 72178, 78520, 124280, 144356, 180445, 288712, 360890, 469157, 721780, 938314, 1443560, 1876628, 2345785, 3753256, 4691570, 9383140, 18766280]

約数ペア:

[(1, 18766280), (2, 9383140), (4, 4691570), (5, 3753256), (8, 2345785), (10, 1876628), (13, 1443560), (20, 938314), (26, 721780), (40, 469157), (52, 360890), (65, 288712), (104, 180445), (130, 144356), (151, 124280), (239, 78520), (260, 72178), (302, 62140), (478, 39260), (520, 36089), (604, 31070), (755, 24856), (956, 19630), (1195, 15704), (1208, 15535), (1510, 12428), (1912, 9815), (1963, 9560), (2390, 7852), (3020, 6214), (3107, 6040), (3926, 4780)]