19971522

素因数分解:

$2^1\times 3^4\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:165

約数の個数: 80

約数和(自身を含む): 47532672

約数和(自身を除く): 27561150

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 47, 54, 61, 81, 86, 94, 122, 129, 141, 162, 183, 258, 282, 366, 387, 423, 549, 774, 846, 1098, 1161, 1269, 1647, 2021, 2322, 2538, 2623, 2867, 3294, 3483, 3807, 4042, 4941, 5246, 5734, 6063, 6966, 7614, 7869, 8601, 9882, 12126, 15738, 17202, 18189, 23607, 25803, 36378, 47214, 51606, 54567, 70821, 77409, 109134, 123281, 141642, 154818, 163701, 212463, 232227, 246562, 327402, 369843, 424926, 464454, 739686, 1109529, 2219058, 3328587, 6657174, 9985761, 19971522]

約数ペア:

[(1, 19971522), (2, 9985761), (3, 6657174), (6, 3328587), (9, 2219058), (18, 1109529), (27, 739686), (43, 464454), (47, 424926), (54, 369843), (61, 327402), (81, 246562), (86, 232227), (94, 212463), (122, 163701), (129, 154818), (141, 141642), (162, 123281), (183, 109134), (258, 77409), (282, 70821), (366, 54567), (387, 51606), (423, 47214), (549, 36378), (774, 25803), (846, 23607), (1098, 18189), (1161, 17202), (1269, 15738), (1647, 12126), (2021, 9882), (2322, 8601), (2538, 7869), (2623, 7614), (2867, 6966), (3294, 6063), (3483, 5734), (3807, 5246), (4042, 4941)]