21597264

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 120

約数和(自身を含む): 66349920

約数和(自身を除く): 44752656

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 83, 104, 117, 139, 144, 156, 166, 208, 234, 249, 278, 312, 332, 417, 468, 498, 556, 624, 664, 747, 834, 936, 996, 1079, 1112, 1251, 1328, 1494, 1668, 1807, 1872, 1992, 2158, 2224, 2502, 2988, 3237, 3336, 3614, 3984, 4316, 5004, 5421, 5976, 6474, 6672, 7228, 8632, 9711, 10008, 10842, 11537, 11952, 12948, 14456, 16263, 17264, 19422, 20016, 21684, 23074, 25896, 28912, 32526, 34611, 38844, 43368, 46148, 51792, 65052, 69222, 77688, 86736, 92296, 103833, 130104, 138444, 149981, 155376, 184592, 207666, 260208, 276888, 299962, 415332, 449943, 553776, 599924, 830664, 899886, 1199848, 1349829, 1661328, 1799772, 2399696, 2699658, 3599544, 5399316, 7199088, 10798632, 21597264]

約数ペア:

[(1, 21597264), (2, 10798632), (3, 7199088), (4, 5399316), (6, 3599544), (8, 2699658), (9, 2399696), (12, 1799772), (13, 1661328), (16, 1349829), (18, 1199848), (24, 899886), (26, 830664), (36, 599924), (39, 553776), (48, 449943), (52, 415332), (72, 299962), (78, 276888), (83, 260208), (104, 207666), (117, 184592), (139, 155376), (144, 149981), (156, 138444), (166, 130104), (208, 103833), (234, 92296), (249, 86736), (278, 77688), (312, 69222), (332, 65052), (417, 51792), (468, 46148), (498, 43368), (556, 38844), (624, 34611), (664, 32526), (747, 28912), (834, 25896), (936, 23074), (996, 21684), (1079, 20016), (1112, 19422), (1251, 17264), (1328, 16263), (1494, 14456), (1668, 12948), (1807, 11952), (1872, 11537), (1992, 10842), (2158, 10008), (2224, 9711), (2502, 8632), (2988, 7228), (3237, 6672), (3336, 6474), (3614, 5976), (3984, 5421), (4316, 5004)]