18545805

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 34320000

約数和(自身を除く): 15774195

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 109, 171, 199, 285, 327, 545, 597, 855, 981, 995, 1635, 1791, 2071, 2985, 3781, 4905, 6213, 8955, 10355, 11343, 18639, 18905, 21691, 31065, 34029, 56715, 65073, 93195, 108455, 170145, 195219, 325365, 412129, 976095, 1236387, 2060645, 3709161, 6181935, 18545805]

約数ペア:

[(1, 18545805), (3, 6181935), (5, 3709161), (9, 2060645), (15, 1236387), (19, 976095), (45, 412129), (57, 325365), (95, 195219), (109, 170145), (171, 108455), (199, 93195), (285, 65073), (327, 56715), (545, 34029), (597, 31065), (855, 21691), (981, 18905), (995, 18639), (1635, 11343), (1791, 10355), (2071, 8955), (2985, 6213), (3781, 4905)]