21637785

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2999}}^1$

素因数の和:3057

約数の個数: 32

約数和(自身を含む): 38304000

約数和(自身を除く): 16666215

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 2999, 7215, 8997, 14995, 38987, 44985, 110963, 116961, 194935, 332889, 554815, 584805, 1442519, 1664445, 4327557, 7212595, 21637785]

約数ペア:

[(1, 21637785), (3, 7212595), (5, 4327557), (13, 1664445), (15, 1442519), (37, 584805), (39, 554815), (65, 332889), (111, 194935), (185, 116961), (195, 110963), (481, 44985), (555, 38987), (1443, 14995), (2405, 8997), (2999, 7215)]