20363590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{163}}^1$

素因数の和:245

約数の個数: 48

約数和(自身を含む): 41038704

約数和(自身を除く): 20675114

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 163, 310, 326, 403, 806, 815, 961, 1630, 1922, 2015, 2119, 4030, 4238, 4805, 5053, 9610, 10106, 10595, 12493, 21190, 24986, 25265, 50530, 62465, 65689, 124930, 131378, 156643, 313286, 328445, 656890, 783215, 1566430, 2036359, 4072718, 10181795, 20363590]

約数ペア:

[(1, 20363590), (2, 10181795), (5, 4072718), (10, 2036359), (13, 1566430), (26, 783215), (31, 656890), (62, 328445), (65, 313286), (130, 156643), (155, 131378), (163, 124930), (310, 65689), (326, 62465), (403, 50530), (806, 25265), (815, 24986), (961, 21190), (1630, 12493), (1922, 10595), (2015, 10106), (2119, 9610), (4030, 5053), (4238, 4805)]