2555020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 5983488

約数和(自身を除く): 3428468

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 317, 403, 620, 634, 806, 1268, 1585, 1612, 2015, 3170, 4030, 4121, 6340, 8060, 8242, 9827, 16484, 19654, 20605, 39308, 41210, 49135, 82420, 98270, 127751, 196540, 255502, 511004, 638755, 1277510, 2555020]

約数ペア:

[(1, 2555020), (2, 1277510), (4, 638755), (5, 511004), (10, 255502), (13, 196540), (20, 127751), (26, 98270), (31, 82420), (52, 49135), (62, 41210), (65, 39308), (124, 20605), (130, 19654), (155, 16484), (260, 9827), (310, 8242), (317, 8060), (403, 6340), (620, 4121), (634, 4030), (806, 3170), (1268, 2015), (1585, 1612)]