21147724

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 41559840

約数和(自身を除く): 20412116

約数列:

[1, 2, 4, 13, 26, 52, 59, 61, 113, 118, 122, 226, 236, 244, 452, 767, 793, 1469, 1534, 1586, 2938, 3068, 3172, 3599, 5876, 6667, 6893, 7198, 13334, 13786, 14396, 26668, 27572, 46787, 86671, 89609, 93574, 173342, 179218, 187148, 346684, 358436, 406687, 813374, 1626748, 5286931, 10573862, 21147724]

約数ペア:

[(1, 21147724), (2, 10573862), (4, 5286931), (13, 1626748), (26, 813374), (52, 406687), (59, 358436), (61, 346684), (113, 187148), (118, 179218), (122, 173342), (226, 93574), (236, 89609), (244, 86671), (452, 46787), (767, 27572), (793, 26668), (1469, 14396), (1534, 13786), (1586, 13334), (2938, 7198), (3068, 6893), (3172, 6667), (3599, 5876)]