18639215

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:503

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 8455825

約数列:

[1, 5, 7, 31, 35, 41, 155, 205, 217, 287, 419, 1085, 1271, 1435, 2095, 2933, 6355, 8897, 12989, 14665, 17179, 44485, 64945, 85895, 90923, 120253, 454615, 532549, 601265, 2662745, 3727843, 18639215]

約数ペア:

[(1, 18639215), (5, 3727843), (7, 2662745), (31, 601265), (35, 532549), (41, 454615), (155, 120253), (205, 90923), (217, 85895), (287, 64945), (419, 44485), (1085, 17179), (1271, 14665), (1435, 12989), (2095, 8897), (2933, 6355)]