90899100

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{100999}}^1$

素因数の和:101019

約数の個数: 54

約数和(自身を含む): 284921000

約数和(自身を除く): 194021900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 100999, 201998, 302997, 403996, 504995, 605994, 908991, 1009990, 1211988, 1514985, 1817982, 2019980, 2524975, 3029970, 3635964, 4544955, 5049950, 6059940, 7574925, 9089910, 10099900, 15149850, 18179820, 22724775, 30299700, 45449550, 90899100]

約数ペア:

[(1, 90899100), (2, 45449550), (3, 30299700), (4, 22724775), (5, 18179820), (6, 15149850), (9, 10099900), (10, 9089910), (12, 7574925), (15, 6059940), (18, 5049950), (20, 4544955), (25, 3635964), (30, 3029970), (36, 2524975), (45, 2019980), (50, 1817982), (60, 1514985), (75, 1211988), (90, 1009990), (100, 908991), (150, 605994), (180, 504995), (225, 403996), (300, 302997), (450, 201998), (900, 100999)]