15928040

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{811}}^1$

素因数の和:1313

約数の個数: 32

約数和(自身を含む): 35955360

約数和(自身を除く): 20027320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 811, 982, 1622, 1964, 2455, 3244, 3928, 4055, 4910, 6488, 8110, 9820, 16220, 19640, 32440, 398201, 796402, 1592804, 1991005, 3185608, 3982010, 7964020, 15928040]

約数ペア:

[(1, 15928040), (2, 7964020), (4, 3982010), (5, 3185608), (8, 1991005), (10, 1592804), (20, 796402), (40, 398201), (491, 32440), (811, 19640), (982, 16220), (1622, 9820), (1964, 8110), (2455, 6488), (3244, 4910), (3928, 4055)]