20009940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1997}}^1$

素因数の和:2176

約数の個数: 48

約数和(自身を含む): 56391552

約数和(自身を除く): 36381612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 167, 334, 501, 668, 835, 1002, 1670, 1997, 2004, 2505, 3340, 3994, 5010, 5991, 7988, 9985, 10020, 11982, 19970, 23964, 29955, 39940, 59910, 119820, 333499, 666998, 1000497, 1333996, 1667495, 2000994, 3334990, 4001988, 5002485, 6669980, 10004970, 20009940]

約数ペア:

[(1, 20009940), (2, 10004970), (3, 6669980), (4, 5002485), (5, 4001988), (6, 3334990), (10, 2000994), (12, 1667495), (15, 1333996), (20, 1000497), (30, 666998), (60, 333499), (167, 119820), (334, 59910), (501, 39940), (668, 29955), (835, 23964), (1002, 19970), (1670, 11982), (1997, 10020), (2004, 9985), (2505, 7988), (3340, 5991), (3994, 5010)]