66928225

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:147

約数の個数: 72

約数和(自身を含む): 107469312

約数和(自身を除く): 40541087

約数列:

[1, 5, 7, 13, 25, 31, 35, 65, 73, 91, 155, 169, 175, 217, 325, 365, 403, 455, 511, 775, 845, 949, 1085, 1183, 1825, 2015, 2263, 2275, 2555, 2821, 4225, 4745, 5239, 5425, 5915, 6643, 10075, 11315, 12337, 12775, 14105, 15841, 23725, 26195, 29419, 29575, 33215, 36673, 56575, 61685, 70525, 79205, 86359, 130975, 147095, 166075, 183365, 205933, 308425, 382447, 396025, 431795, 735475, 916825, 1029665, 1912235, 2158975, 2677129, 5148325, 9561175, 13385645, 66928225]

約数ペア:

[(1, 66928225), (5, 13385645), (7, 9561175), (13, 5148325), (25, 2677129), (31, 2158975), (35, 1912235), (65, 1029665), (73, 916825), (91, 735475), (155, 431795), (169, 396025), (175, 382447), (217, 308425), (325, 205933), (365, 183365), (403, 166075), (455, 147095), (511, 130975), (775, 86359), (845, 79205), (949, 70525), (1085, 61685), (1183, 56575), (1825, 36673), (2015, 33215), (2263, 29575), (2275, 29419), (2555, 26195), (2821, 23725), (4225, 15841), (4745, 14105), (5239, 12775), (5425, 12337), (5915, 11315), (6643, 10075)]