31788040

素因数分解:

$2^3\times 5^1\times {\mathrm{653}}^1\times {\mathrm{1217}}^1$

素因数の和:1881

約数の個数: 32

約数和(自身を含む): 71691480

約数和(自身を除く): 39903440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 653, 1217, 1306, 2434, 2612, 3265, 4868, 5224, 6085, 6530, 9736, 12170, 13060, 24340, 26120, 48680, 794701, 1589402, 3178804, 3973505, 6357608, 7947010, 15894020, 31788040]

約数ペア:

[(1, 31788040), (2, 15894020), (4, 7947010), (5, 6357608), (8, 3973505), (10, 3178804), (20, 1589402), (40, 794701), (653, 48680), (1217, 26120), (1306, 24340), (2434, 13060), (2612, 12170), (3265, 9736), (4868, 6530), (5224, 6085)]