20897325

素因数分解:

$3^3\times 5^2\times {\mathrm{83}}^1\times {\mathrm{373}}^1$

素因数の和:475

約数の個数: 48

約数和(自身を含む): 38955840

約数和(自身を除く): 18058515

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 83, 135, 225, 249, 373, 415, 675, 747, 1119, 1245, 1865, 2075, 2241, 3357, 3735, 5595, 6225, 9325, 10071, 11205, 16785, 18675, 27975, 30959, 50355, 56025, 83925, 92877, 154795, 251775, 278631, 464385, 773975, 835893, 1393155, 2321925, 4179465, 6965775, 20897325]

約数ペア:

[(1, 20897325), (3, 6965775), (5, 4179465), (9, 2321925), (15, 1393155), (25, 835893), (27, 773975), (45, 464385), (75, 278631), (83, 251775), (135, 154795), (225, 92877), (249, 83925), (373, 56025), (415, 50355), (675, 30959), (747, 27975), (1119, 18675), (1245, 16785), (1865, 11205), (2075, 10071), (2241, 9325), (3357, 6225), (3735, 5595)]