15989740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 36620640

約数和(自身を除く): 20630900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 691, 890, 1157, 1382, 1780, 2314, 2764, 3455, 4628, 5785, 6910, 8983, 11570, 13820, 17966, 23140, 35932, 44915, 61499, 89830, 122998, 179660, 245996, 307495, 614990, 799487, 1229980, 1598974, 3197948, 3997435, 7994870, 15989740]

約数ペア:

[(1, 15989740), (2, 7994870), (4, 3997435), (5, 3197948), (10, 1598974), (13, 1229980), (20, 799487), (26, 614990), (52, 307495), (65, 245996), (89, 179660), (130, 122998), (178, 89830), (260, 61499), (356, 44915), (445, 35932), (691, 23140), (890, 17966), (1157, 13820), (1382, 11570), (1780, 8983), (2314, 6910), (2764, 5785), (3455, 4628)]