19565960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{509}}^1$

素因数の和:582

約数の個数: 48

約数和(自身を含む): 45578700

約数和(自身を除く): 26012740

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 509, 620, 961, 1018, 1240, 1922, 2036, 2545, 3844, 4072, 4805, 5090, 7688, 9610, 10180, 15779, 19220, 20360, 31558, 38440, 63116, 78895, 126232, 157790, 315580, 489149, 631160, 978298, 1956596, 2445745, 3913192, 4891490, 9782980, 19565960]

約数ペア:

[(1, 19565960), (2, 9782980), (4, 4891490), (5, 3913192), (8, 2445745), (10, 1956596), (20, 978298), (31, 631160), (40, 489149), (62, 315580), (124, 157790), (155, 126232), (248, 78895), (310, 63116), (509, 38440), (620, 31558), (961, 20360), (1018, 19220), (1240, 15779), (1922, 10180), (2036, 9610), (2545, 7688), (3844, 5090), (4072, 4805)]