20018040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23831}}^1$

素因数の和:23852

約数の個数: 64

約数和(自身を含む): 68636160

約数和(自身を除く): 48618120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 23831, 47662, 71493, 95324, 119155, 142986, 166817, 190648, 238310, 285972, 333634, 357465, 476620, 500451, 571944, 667268, 714930, 834085, 953240, 1000902, 1334536, 1429860, 1668170, 2001804, 2502255, 2859720, 3336340, 4003608, 5004510, 6672680, 10009020, 20018040]

約数ペア:

[(1, 20018040), (2, 10009020), (3, 6672680), (4, 5004510), (5, 4003608), (6, 3336340), (7, 2859720), (8, 2502255), (10, 2001804), (12, 1668170), (14, 1429860), (15, 1334536), (20, 1000902), (21, 953240), (24, 834085), (28, 714930), (30, 667268), (35, 571944), (40, 500451), (42, 476620), (56, 357465), (60, 333634), (70, 285972), (84, 238310), (105, 190648), (120, 166817), (140, 142986), (168, 119155), (210, 95324), (280, 71493), (420, 47662), (840, 23831)]