25723490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:555

約数の個数: 48

約数和(自身を含む): 51860736

約数和(自身を除く): 26137246

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 169, 310, 338, 403, 491, 806, 845, 982, 1690, 2015, 2455, 4030, 4910, 5239, 6383, 10478, 12766, 15221, 26195, 30442, 31915, 52390, 63830, 76105, 82979, 152210, 165958, 197873, 395746, 414895, 829790, 989365, 1978730, 2572349, 5144698, 12861745, 25723490]

約数ペア:

[(1, 25723490), (2, 12861745), (5, 5144698), (10, 2572349), (13, 1978730), (26, 989365), (31, 829790), (62, 414895), (65, 395746), (130, 197873), (155, 165958), (169, 152210), (310, 82979), (338, 76105), (403, 63830), (491, 52390), (806, 31915), (845, 30442), (982, 26195), (1690, 15221), (2015, 12766), (2455, 10478), (4030, 6383), (4910, 5239)]