20916792

素因数分解:

$2^3\times 3^4\times {\mathrm{13}}^2\times {\mathrm{191}}^1$

素因数の和:235

約数の個数: 120

約数和(自身を含む): 63771840

約数和(自身を除く): 42855048

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 81, 104, 108, 117, 156, 162, 169, 191, 216, 234, 312, 324, 338, 351, 382, 468, 507, 573, 648, 676, 702, 764, 936, 1014, 1053, 1146, 1352, 1404, 1521, 1528, 1719, 2028, 2106, 2292, 2483, 2808, 3042, 3438, 4056, 4212, 4563, 4584, 4966, 5157, 6084, 6876, 7449, 8424, 9126, 9932, 10314, 12168, 13689, 13752, 14898, 15471, 18252, 19864, 20628, 22347, 27378, 29796, 30942, 32279, 36504, 41256, 44694, 54756, 59592, 61884, 64558, 67041, 89388, 96837, 109512, 123768, 129116, 134082, 178776, 193674, 201123, 258232, 268164, 290511, 387348, 402246, 536328, 581022, 774696, 804492, 871533, 1162044, 1608984, 1743066, 2324088, 2614599, 3486132, 5229198, 6972264, 10458396, 20916792]

約数ペア:

[(1, 20916792), (2, 10458396), (3, 6972264), (4, 5229198), (6, 3486132), (8, 2614599), (9, 2324088), (12, 1743066), (13, 1608984), (18, 1162044), (24, 871533), (26, 804492), (27, 774696), (36, 581022), (39, 536328), (52, 402246), (54, 387348), (72, 290511), (78, 268164), (81, 258232), (104, 201123), (108, 193674), (117, 178776), (156, 134082), (162, 129116), (169, 123768), (191, 109512), (216, 96837), (234, 89388), (312, 67041), (324, 64558), (338, 61884), (351, 59592), (382, 54756), (468, 44694), (507, 41256), (573, 36504), (648, 32279), (676, 30942), (702, 29796), (764, 27378), (936, 22347), (1014, 20628), (1053, 19864), (1146, 18252), (1352, 15471), (1404, 14898), (1521, 13752), (1528, 13689), (1719, 12168), (2028, 10314), (2106, 9932), (2292, 9126), (2483, 8424), (2808, 7449), (3042, 6876), (3438, 6084), (4056, 5157), (4212, 4966), (4563, 4584)]