15991980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1381}}^1$

素因数の和:1586

約数の個数: 48

約数和(自身を含む): 45042144

約数和(自身を除く): 29050164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 193, 386, 579, 772, 965, 1158, 1381, 1930, 2316, 2762, 2895, 3860, 4143, 5524, 5790, 6905, 8286, 11580, 13810, 16572, 20715, 27620, 41430, 82860, 266533, 533066, 799599, 1066132, 1332665, 1599198, 2665330, 3198396, 3997995, 5330660, 7995990, 15991980]

約数ペア:

[(1, 15991980), (2, 7995990), (3, 5330660), (4, 3997995), (5, 3198396), (6, 2665330), (10, 1599198), (12, 1332665), (15, 1066132), (20, 799599), (30, 533066), (60, 266533), (193, 82860), (386, 41430), (579, 27620), (772, 20715), (965, 16572), (1158, 13810), (1381, 11580), (1930, 8286), (2316, 6905), (2762, 5790), (2895, 5524), (3860, 4143)]