30687860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2011}}^1$

素因数の和:2136

約数の個数: 48

約数和(自身を含む): 74363520

約数和(自身を除く): 43675660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1526, 2011, 2180, 3052, 3815, 4022, 7630, 8044, 10055, 14077, 15260, 20110, 28154, 40220, 56308, 70385, 140770, 219199, 281540, 438398, 876796, 1095995, 1534393, 2191990, 3068786, 4383980, 6137572, 7671965, 15343930, 30687860]

約数ペア:

[(1, 30687860), (2, 15343930), (4, 7671965), (5, 6137572), (7, 4383980), (10, 3068786), (14, 2191990), (20, 1534393), (28, 1095995), (35, 876796), (70, 438398), (109, 281540), (140, 219199), (218, 140770), (436, 70385), (545, 56308), (763, 40220), (1090, 28154), (1526, 20110), (2011, 15260), (2180, 14077), (3052, 10055), (3815, 8044), (4022, 7630)]