21230620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1523}}^1$

素因数の和:1590

約数の個数: 48

約数和(自身を含む): 48390048

約数和(自身を除く): 27159428

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 1523, 2788, 3046, 3485, 6092, 6970, 7615, 13940, 15230, 25891, 30460, 51782, 62443, 103564, 124886, 129455, 249772, 258910, 312215, 517820, 624430, 1061531, 1248860, 2123062, 4246124, 5307655, 10615310, 21230620]

約数ペア:

[(1, 21230620), (2, 10615310), (4, 5307655), (5, 4246124), (10, 2123062), (17, 1248860), (20, 1061531), (34, 624430), (41, 517820), (68, 312215), (82, 258910), (85, 249772), (164, 129455), (170, 124886), (205, 103564), (340, 62443), (410, 51782), (697, 30460), (820, 25891), (1394, 15230), (1523, 13940), (2788, 7615), (3046, 6970), (3485, 6092)]