20029980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1999}}^1$

素因数の和:2178

約数の個数: 48

約数和(自身を含む): 56448000

約数和(自身を除く): 36418020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 167, 334, 501, 668, 835, 1002, 1670, 1999, 2004, 2505, 3340, 3998, 5010, 5997, 7996, 9995, 10020, 11994, 19990, 23988, 29985, 39980, 59970, 119940, 333833, 667666, 1001499, 1335332, 1669165, 2002998, 3338330, 4005996, 5007495, 6676660, 10014990, 20029980]

約数ペア:

[(1, 20029980), (2, 10014990), (3, 6676660), (4, 5007495), (5, 4005996), (6, 3338330), (10, 2002998), (12, 1669165), (15, 1335332), (20, 1001499), (30, 667666), (60, 333833), (167, 119940), (334, 59970), (501, 39980), (668, 29985), (835, 23988), (1002, 19990), (1670, 11994), (1999, 10020), (2004, 9995), (2505, 7996), (3340, 5997), (3998, 5010)]