31290005

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 41361408

約数和(自身を除く): 10071403

約数列:

[1, 5, 23, 31, 67, 115, 131, 155, 335, 655, 713, 1541, 2077, 3013, 3565, 4061, 7705, 8777, 10385, 15065, 20305, 43885, 47771, 93403, 201871, 238855, 272087, 467015, 1009355, 1360435, 6258001, 31290005]

約数ペア:

[(1, 31290005), (5, 6258001), (23, 1360435), (31, 1009355), (67, 467015), (115, 272087), (131, 238855), (155, 201871), (335, 93403), (655, 47771), (713, 43885), (1541, 20305), (2077, 15065), (3013, 10385), (3565, 8777), (4061, 7705)]