9910000

素因数分解:

$2^4\times 5^4\times {\mathrm{991}}^1$

素因数の和:1019

約数の個数: 50

約数和(自身を含む): 24017312

約数和(自身を除く): 14107312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 991, 1000, 1250, 1982, 2000, 2500, 3964, 4955, 5000, 7928, 9910, 10000, 15856, 19820, 24775, 39640, 49550, 79280, 99100, 123875, 198200, 247750, 396400, 495500, 619375, 991000, 1238750, 1982000, 2477500, 4955000, 9910000]

約数ペア:

[(1, 9910000), (2, 4955000), (4, 2477500), (5, 1982000), (8, 1238750), (10, 991000), (16, 619375), (20, 495500), (25, 396400), (40, 247750), (50, 198200), (80, 123875), (100, 99100), (125, 79280), (200, 49550), (250, 39640), (400, 24775), (500, 19820), (625, 15856), (991, 10000), (1000, 9910), (1250, 7928), (1982, 5000), (2000, 4955), (2500, 3964)]