15918280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{409}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 41328000

約数和(自身を除く): 25409720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 409, 556, 695, 818, 973, 1112, 1390, 1636, 1946, 2045, 2780, 2863, 3272, 3892, 4090, 4865, 5560, 5726, 7784, 8180, 9730, 11452, 14315, 16360, 19460, 22904, 28630, 38920, 56851, 57260, 113702, 114520, 227404, 284255, 397957, 454808, 568510, 795914, 1137020, 1591828, 1989785, 2274040, 3183656, 3979570, 7959140, 15918280]

約数ペア:

[(1, 15918280), (2, 7959140), (4, 3979570), (5, 3183656), (7, 2274040), (8, 1989785), (10, 1591828), (14, 1137020), (20, 795914), (28, 568510), (35, 454808), (40, 397957), (56, 284255), (70, 227404), (139, 114520), (140, 113702), (278, 57260), (280, 56851), (409, 38920), (556, 28630), (695, 22904), (818, 19460), (973, 16360), (1112, 14315), (1390, 11452), (1636, 9730), (1946, 8180), (2045, 7784), (2780, 5726), (2863, 5560), (3272, 4865), (3892, 4090)]