18981960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{317}}^1\times {\mathrm{499}}^1$

素因数の和:830

約数の個数: 64

約数和(自身を含む): 57240000

約数和(自身を除く): 38258040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 317, 499, 634, 951, 998, 1268, 1497, 1585, 1902, 1996, 2495, 2536, 2994, 3170, 3804, 3992, 4755, 4990, 5988, 6340, 7485, 7608, 9510, 9980, 11976, 12680, 14970, 19020, 19960, 29940, 38040, 59880, 158183, 316366, 474549, 632732, 790915, 949098, 1265464, 1581830, 1898196, 2372745, 3163660, 3796392, 4745490, 6327320, 9490980, 18981960]

約数ペア:

[(1, 18981960), (2, 9490980), (3, 6327320), (4, 4745490), (5, 3796392), (6, 3163660), (8, 2372745), (10, 1898196), (12, 1581830), (15, 1265464), (20, 949098), (24, 790915), (30, 632732), (40, 474549), (60, 316366), (120, 158183), (317, 59880), (499, 38040), (634, 29940), (951, 19960), (998, 19020), (1268, 14970), (1497, 12680), (1585, 11976), (1902, 9980), (1996, 9510), (2495, 7608), (2536, 7485), (2994, 6340), (3170, 5988), (3804, 4990), (3992, 4755)]