18645640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1559}}^1$

素因数の和:1606

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 28528760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1559, 2392, 2990, 3118, 5980, 6236, 7795, 11960, 12472, 15590, 20267, 31180, 35857, 40534, 62360, 71714, 81068, 101335, 143428, 162136, 179285, 202670, 286856, 358570, 405340, 466141, 717140, 810680, 932282, 1434280, 1864564, 2330705, 3729128, 4661410, 9322820, 18645640]

約数ペア:

[(1, 18645640), (2, 9322820), (4, 4661410), (5, 3729128), (8, 2330705), (10, 1864564), (13, 1434280), (20, 932282), (23, 810680), (26, 717140), (40, 466141), (46, 405340), (52, 358570), (65, 286856), (92, 202670), (104, 179285), (115, 162136), (130, 143428), (184, 101335), (230, 81068), (260, 71714), (299, 62360), (460, 40534), (520, 35857), (598, 31180), (920, 20267), (1196, 15590), (1495, 12472), (1559, 11960), (2392, 7795), (2990, 6236), (3118, 5980)]