20469680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3323}}^1$

素因数の和:3354

約数の個数: 80

約数和(自身を含む): 59353344

約数和(自身を除く): 38883664

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3323, 6160, 6646, 13292, 16615, 23261, 26584, 33230, 36553, 46522, 53168, 66460, 73106, 93044, 116305, 132920, 146212, 182765, 186088, 232610, 255871, 265840, 292424, 365530, 372176, 465220, 511742, 584848, 731060, 930440, 1023484, 1279355, 1462120, 1860880, 2046968, 2558710, 2924240, 4093936, 5117420, 10234840, 20469680]

約数ペア:

[(1, 20469680), (2, 10234840), (4, 5117420), (5, 4093936), (7, 2924240), (8, 2558710), (10, 2046968), (11, 1860880), (14, 1462120), (16, 1279355), (20, 1023484), (22, 930440), (28, 731060), (35, 584848), (40, 511742), (44, 465220), (55, 372176), (56, 365530), (70, 292424), (77, 265840), (80, 255871), (88, 232610), (110, 186088), (112, 182765), (140, 146212), (154, 132920), (176, 116305), (220, 93044), (280, 73106), (308, 66460), (385, 53168), (440, 46522), (560, 36553), (616, 33230), (770, 26584), (880, 23261), (1232, 16615), (1540, 13292), (3080, 6646), (3323, 6160)]