19991940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3299}}^1$

素因数の和:3412

約数の個数: 48

約数和(自身を含む): 56548800

約数和(自身を除く): 36556860

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, 3299, 6060, 6598, 9897, 13196, 16495, 19794, 32990, 39588, 49485, 65980, 98970, 197940, 333199, 666398, 999597, 1332796, 1665995, 1999194, 3331990, 3998388, 4997985, 6663980, 9995970, 19991940]

約数ペア:

[(1, 19991940), (2, 9995970), (3, 6663980), (4, 4997985), (5, 3998388), (6, 3331990), (10, 1999194), (12, 1665995), (15, 1332796), (20, 999597), (30, 666398), (60, 333199), (101, 197940), (202, 98970), (303, 65980), (404, 49485), (505, 39588), (606, 32990), (1010, 19794), (1212, 16495), (1515, 13196), (2020, 9897), (3030, 6598), (3299, 6060)]