21418236

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{691}}^1$

素因数の和:752

約数の個数: 96

約数和(自身を含む): 65103360

約数和(自身を除く): 43685124

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 41, 42, 54, 63, 82, 84, 108, 123, 126, 164, 189, 246, 252, 287, 369, 378, 492, 574, 691, 738, 756, 861, 1107, 1148, 1382, 1476, 1722, 2073, 2214, 2583, 2764, 3444, 4146, 4428, 4837, 5166, 6219, 7749, 8292, 9674, 10332, 12438, 14511, 15498, 18657, 19348, 24876, 28331, 29022, 30996, 37314, 43533, 56662, 58044, 74628, 84993, 87066, 113324, 130599, 169986, 174132, 198317, 254979, 261198, 339972, 396634, 509958, 522396, 594951, 764937, 793268, 1019916, 1189902, 1529874, 1784853, 2379804, 3059748, 3569706, 5354559, 7139412, 10709118, 21418236]

約数ペア:

[(1, 21418236), (2, 10709118), (3, 7139412), (4, 5354559), (6, 3569706), (7, 3059748), (9, 2379804), (12, 1784853), (14, 1529874), (18, 1189902), (21, 1019916), (27, 793268), (28, 764937), (36, 594951), (41, 522396), (42, 509958), (54, 396634), (63, 339972), (82, 261198), (84, 254979), (108, 198317), (123, 174132), (126, 169986), (164, 130599), (189, 113324), (246, 87066), (252, 84993), (287, 74628), (369, 58044), (378, 56662), (492, 43533), (574, 37314), (691, 30996), (738, 29022), (756, 28331), (861, 24876), (1107, 19348), (1148, 18657), (1382, 15498), (1476, 14511), (1722, 12438), (2073, 10332), (2214, 9674), (2583, 8292), (2764, 7749), (3444, 6219), (4146, 5166), (4428, 4837)]