20660000

素因数分解:

$2^5\times 5^4\times {\mathrm{1033}}^1$

素因数の和:1063

約数の個数: 60

約数和(自身を含む): 50875902

約数和(自身を除く): 30215902

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1033, 1250, 2000, 2066, 2500, 4000, 4132, 5000, 5165, 8264, 10000, 10330, 16528, 20000, 20660, 25825, 33056, 41320, 51650, 82640, 103300, 129125, 165280, 206600, 258250, 413200, 516500, 645625, 826400, 1033000, 1291250, 2066000, 2582500, 4132000, 5165000, 10330000, 20660000]

約数ペア:

[(1, 20660000), (2, 10330000), (4, 5165000), (5, 4132000), (8, 2582500), (10, 2066000), (16, 1291250), (20, 1033000), (25, 826400), (32, 645625), (40, 516500), (50, 413200), (80, 258250), (100, 206600), (125, 165280), (160, 129125), (200, 103300), (250, 82640), (400, 51650), (500, 41320), (625, 33056), (800, 25825), (1000, 20660), (1033, 20000), (1250, 16528), (2000, 10330), (2066, 10000), (2500, 8264), (4000, 5165), (4132, 5000)]