721439640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{2003999}}^1$

素因数の和:2004016

約数の個数: 48

約数和(自身を含む): 2344680000

約数和(自身を除く): 1623240360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 2003999, 4007998, 6011997, 8015996, 10019995, 12023994, 16031992, 18035991, 20039990, 24047988, 30059985, 36071982, 40079980, 48095976, 60119970, 72143964, 80159960, 90179955, 120239940, 144287928, 180359910, 240479880, 360719820, 721439640]

約数ペア:

[(1, 721439640), (2, 360719820), (3, 240479880), (4, 180359910), (5, 144287928), (6, 120239940), (8, 90179955), (9, 80159960), (10, 72143964), (12, 60119970), (15, 48095976), (18, 40079980), (20, 36071982), (24, 30059985), (30, 24047988), (36, 20039990), (40, 18035991), (45, 16031992), (60, 12023994), (72, 10019995), (90, 8015996), (120, 6011997), (180, 4007998), (360, 2003999)]