20799940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1471}}^1$

素因数の和:1588

約数の個数: 48

約数和(自身を含む): 50448384

約数和(自身を除く): 29648444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 1471, 2020, 2828, 2942, 3535, 5884, 7070, 7355, 10297, 14140, 14710, 20594, 29420, 41188, 51485, 102970, 148571, 205940, 297142, 594284, 742855, 1039997, 1485710, 2079994, 2971420, 4159988, 5199985, 10399970, 20799940]

約数ペア:

[(1, 20799940), (2, 10399970), (4, 5199985), (5, 4159988), (7, 2971420), (10, 2079994), (14, 1485710), (20, 1039997), (28, 742855), (35, 594284), (70, 297142), (101, 205940), (140, 148571), (202, 102970), (404, 51485), (505, 41188), (707, 29420), (1010, 20594), (1414, 14710), (1471, 14140), (2020, 10297), (2828, 7355), (2942, 7070), (3535, 5884)]