21904880

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2711}}^1$

素因数の和:2825

約数の個数: 40

約数和(自身を含む): 51452064

約数和(自身を除く): 29547184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2711, 4040, 5422, 8080, 10844, 13555, 21688, 27110, 43376, 54220, 108440, 216880, 273811, 547622, 1095244, 1369055, 2190488, 2738110, 4380976, 5476220, 10952440, 21904880]

約数ペア:

[(1, 21904880), (2, 10952440), (4, 5476220), (5, 4380976), (8, 2738110), (10, 2190488), (16, 1369055), (20, 1095244), (40, 547622), (80, 273811), (101, 216880), (202, 108440), (404, 54220), (505, 43376), (808, 27110), (1010, 21688), (1616, 13555), (2020, 10844), (2711, 8080), (4040, 5422)]