21504490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1063}}^1$

素因数の和:1111

約数の個数: 48

約数和(自身を含む): 47037312

約数和(自身を除く): 25532822

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 170, 238, 289, 578, 595, 1063, 1190, 1445, 2023, 2126, 2890, 4046, 5315, 7441, 10115, 10630, 14882, 18071, 20230, 36142, 37205, 74410, 90355, 126497, 180710, 252994, 307207, 614414, 632485, 1264970, 1536035, 2150449, 3072070, 4300898, 10752245, 21504490]

約数ペア:

[(1, 21504490), (2, 10752245), (5, 4300898), (7, 3072070), (10, 2150449), (14, 1536035), (17, 1264970), (34, 632485), (35, 614414), (70, 307207), (85, 252994), (119, 180710), (170, 126497), (238, 90355), (289, 74410), (578, 37205), (595, 36142), (1063, 20230), (1190, 18071), (1445, 14882), (2023, 10630), (2126, 10115), (2890, 7441), (4046, 5315)]