51446980

素因数分解:

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

素因数の和:557

約数の個数: 72

約数和(自身を含む): 121008384

約数和(自身を除く): 69561404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 310, 338, 403, 491, 620, 676, 806, 845, 982, 1612, 1690, 1964, 2015, 2455, 3380, 4030, 4910, 5239, 6383, 8060, 9820, 10478, 12766, 15221, 20956, 25532, 26195, 30442, 31915, 52390, 60884, 63830, 76105, 82979, 104780, 127660, 152210, 165958, 197873, 304420, 331916, 395746, 414895, 791492, 829790, 989365, 1659580, 1978730, 2572349, 3957460, 5144698, 10289396, 12861745, 25723490, 51446980]

約数ペア:

[(1, 51446980), (2, 25723490), (4, 12861745), (5, 10289396), (10, 5144698), (13, 3957460), (20, 2572349), (26, 1978730), (31, 1659580), (52, 989365), (62, 829790), (65, 791492), (124, 414895), (130, 395746), (155, 331916), (169, 304420), (260, 197873), (310, 165958), (338, 152210), (403, 127660), (491, 104780), (620, 82979), (676, 76105), (806, 63830), (845, 60884), (982, 52390), (1612, 31915), (1690, 30442), (1964, 26195), (2015, 25532), (2455, 20956), (3380, 15221), (4030, 12766), (4910, 10478), (5239, 9820), (6383, 8060)]