72900900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{81001}}^1$

素因数の和:81021

約数の個数: 54

約数和(自身を含む): 228506642

約数和(自身を除く): 155605742

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, 81001, 162002, 243003, 324004, 405005, 486006, 729009, 810010, 972012, 1215015, 1458018, 1620020, 2025025, 2430030, 2916036, 3645045, 4050050, 4860060, 6075075, 7290090, 8100100, 12150150, 14580180, 18225225, 24300300, 36450450, 72900900]

約数ペア:

[(1, 72900900), (2, 36450450), (3, 24300300), (4, 18225225), (5, 14580180), (6, 12150150), (9, 8100100), (10, 7290090), (12, 6075075), (15, 4860060), (18, 4050050), (20, 3645045), (25, 2916036), (30, 2430030), (36, 2025025), (45, 1620020), (50, 1458018), (60, 1215015), (75, 972012), (90, 810010), (100, 729009), (150, 486006), (180, 405005), (225, 324004), (300, 243003), (450, 162002), (900, 81001)]