20116915

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 31622400

約数和(自身を除く): 11505485

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 169, 179, 247, 455, 665, 845, 895, 1183, 1235, 1253, 1729, 2327, 3211, 3401, 5915, 6265, 8645, 11635, 16055, 16289, 17005, 22477, 23807, 30251, 44213, 81445, 112385, 119035, 151255, 211757, 221065, 309491, 574769, 1058785, 1547455, 2873845, 4023383, 20116915]

約数ペア:

[(1, 20116915), (5, 4023383), (7, 2873845), (13, 1547455), (19, 1058785), (35, 574769), (65, 309491), (91, 221065), (95, 211757), (133, 151255), (169, 119035), (179, 112385), (247, 81445), (455, 44213), (665, 30251), (845, 23807), (895, 22477), (1183, 17005), (1235, 16289), (1253, 16055), (1729, 11635), (2327, 8645), (3211, 6265), (3401, 5915)]