21203940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3499}}^1$

素因数の和:3612

約数の個数: 48

約数和(自身を含む): 59976000

約数和(自身を除く): 38772060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 101, 202, 303, 404, 505, 606, 1010, 1212, 1515, 2020, 3030, 3499, 6060, 6998, 10497, 13996, 17495, 20994, 34990, 41988, 52485, 69980, 104970, 209940, 353399, 706798, 1060197, 1413596, 1766995, 2120394, 3533990, 4240788, 5300985, 7067980, 10601970, 21203940]

約数ペア:

[(1, 21203940), (2, 10601970), (3, 7067980), (4, 5300985), (5, 4240788), (6, 3533990), (10, 2120394), (12, 1766995), (15, 1413596), (20, 1060197), (30, 706798), (60, 353399), (101, 209940), (202, 104970), (303, 69980), (404, 52485), (505, 41988), (606, 34990), (1010, 20994), (1212, 17495), (1515, 13996), (2020, 10497), (3030, 6998), (3499, 6060)]