21095945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 28933632

約数和(自身を除く): 7837687

約数列:

[1, 5, 13, 23, 65, 103, 115, 137, 299, 515, 685, 1339, 1495, 1781, 2369, 3151, 6695, 8905, 11845, 14111, 15755, 30797, 40963, 70555, 153985, 183443, 204815, 324553, 917215, 1622765, 4219189, 21095945]

約数ペア:

[(1, 21095945), (5, 4219189), (13, 1622765), (23, 917215), (65, 324553), (103, 204815), (115, 183443), (137, 153985), (299, 70555), (515, 40963), (685, 30797), (1339, 15755), (1495, 14111), (1781, 11845), (2369, 8905), (3151, 6695)]