499720

素因数分解:

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

素因数の和:86

約数の個数: 48

約数和(自身を含む): 1251180

約数和(自身を除く): 751460

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, 961, 1240, 1612, 1922, 2015, 3224, 3844, 4030, 4805, 7688, 8060, 9610, 12493, 16120, 19220, 24986, 38440, 49972, 62465, 99944, 124930, 249860, 499720]

約数ペア:

[(1, 499720), (2, 249860), (4, 124930), (5, 99944), (8, 62465), (10, 49972), (13, 38440), (20, 24986), (26, 19220), (31, 16120), (40, 12493), (52, 9610), (62, 8060), (65, 7688), (104, 4805), (124, 4030), (130, 3844), (155, 3224), (248, 2015), (260, 1922), (310, 1612), (403, 1240), (520, 961), (620, 806)]