491514920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{30491}}^1$

素因数の和:30546

約数の個数: 64

約数和(自身を含む): 1229437440

約数和(自身を除く): 737922520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 16120, 30491, 60982, 121964, 152455, 243928, 304910, 396383, 609820, 792766, 945221, 1219640, 1585532, 1890442, 1981915, 3171064, 3780884, 3963830, 4726105, 7561768, 7927660, 9452210, 12287873, 15855320, 18904420, 24575746, 37808840, 49151492, 61439365, 98302984, 122878730, 245757460, 491514920]

約数ペア:

[(1, 491514920), (2, 245757460), (4, 122878730), (5, 98302984), (8, 61439365), (10, 49151492), (13, 37808840), (20, 24575746), (26, 18904420), (31, 15855320), (40, 12287873), (52, 9452210), (62, 7927660), (65, 7561768), (104, 4726105), (124, 3963830), (130, 3780884), (155, 3171064), (248, 1981915), (260, 1890442), (310, 1585532), (403, 1219640), (520, 945221), (620, 792766), (806, 609820), (1240, 396383), (1612, 304910), (2015, 243928), (3224, 152455), (4030, 121964), (8060, 60982), (16120, 30491)]