21400729725

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{58943}}^1$

素因数の和:59106

約数の個数: 48

約数和(自身を含む): 36486807552

約数和(自身を除く): 15086077827

約数列:

[1, 3, 5, 15, 25, 47, 75, 103, 141, 235, 309, 515, 705, 1175, 1545, 2575, 3525, 4841, 7725, 14523, 24205, 58943, 72615, 121025, 176829, 294715, 363075, 884145, 1473575, 2770321, 4420725, 6071129, 8310963, 13851605, 18213387, 30355645, 41554815, 69258025, 91066935, 151778225, 207774075, 285343063, 455334675, 856029189, 1426715315, 4280145945, 7133576575, 21400729725]

約数ペア:

[(1, 21400729725), (3, 7133576575), (5, 4280145945), (15, 1426715315), (25, 856029189), (47, 455334675), (75, 285343063), (103, 207774075), (141, 151778225), (235, 91066935), (309, 69258025), (515, 41554815), (705, 30355645), (1175, 18213387), (1545, 13851605), (2575, 8310963), (3525, 6071129), (4841, 4420725), (7725, 2770321), (14523, 1473575), (24205, 884145), (58943, 363075), (72615, 294715), (121025, 176829)]