19919880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55333}}^1$

素因数の和:55350

約数の個数: 48

約数和(自身を含む): 64740780

約数和(自身を除く): 44820900

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, 55333, 110666, 165999, 221332, 276665, 331998, 442664, 497997, 553330, 663996, 829995, 995994, 1106660, 1327992, 1659990, 1991988, 2213320, 2489985, 3319980, 3983976, 4979970, 6639960, 9959940, 19919880]

約数ペア:

[(1, 19919880), (2, 9959940), (3, 6639960), (4, 4979970), (5, 3983976), (6, 3319980), (8, 2489985), (9, 2213320), (10, 1991988), (12, 1659990), (15, 1327992), (18, 1106660), (20, 995994), (24, 829995), (30, 663996), (36, 553330), (40, 497997), (45, 442664), (60, 331998), (72, 276665), (90, 221332), (120, 165999), (180, 110666), (360, 55333)]