20988960

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{599}}^1$

素因数の和:690

約数の個数: 96

約数和(自身を含む): 67132800

約数和(自身を除く): 46143840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 73, 80, 96, 120, 146, 160, 219, 240, 292, 365, 438, 480, 584, 599, 730, 876, 1095, 1168, 1198, 1460, 1752, 1797, 2190, 2336, 2396, 2920, 2995, 3504, 3594, 4380, 4792, 5840, 5990, 7008, 7188, 8760, 8985, 9584, 11680, 11980, 14376, 17520, 17970, 19168, 23960, 28752, 35040, 35940, 43727, 47920, 57504, 71880, 87454, 95840, 131181, 143760, 174908, 218635, 262362, 287520, 349816, 437270, 524724, 655905, 699632, 874540, 1049448, 1311810, 1399264, 1749080, 2098896, 2623620, 3498160, 4197792, 5247240, 6996320, 10494480, 20988960]

約数ペア:

[(1, 20988960), (2, 10494480), (3, 6996320), (4, 5247240), (5, 4197792), (6, 3498160), (8, 2623620), (10, 2098896), (12, 1749080), (15, 1399264), (16, 1311810), (20, 1049448), (24, 874540), (30, 699632), (32, 655905), (40, 524724), (48, 437270), (60, 349816), (73, 287520), (80, 262362), (96, 218635), (120, 174908), (146, 143760), (160, 131181), (219, 95840), (240, 87454), (292, 71880), (365, 57504), (438, 47920), (480, 43727), (584, 35940), (599, 35040), (730, 28752), (876, 23960), (1095, 19168), (1168, 17970), (1198, 17520), (1460, 14376), (1752, 11980), (1797, 11680), (2190, 9584), (2336, 8985), (2396, 8760), (2920, 7188), (2995, 7008), (3504, 5990), (3594, 5840), (4380, 4792)]