21982000

素因数分解:

$2^4\times 5^3\times {\mathrm{29}}^1\times {\mathrm{379}}^1$

素因数の和:431

約数の個数: 80

約数和(自身を含む): 55130400

約数和(自身を除く): 33148400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 80, 100, 116, 125, 145, 200, 232, 250, 290, 379, 400, 464, 500, 580, 725, 758, 1000, 1160, 1450, 1516, 1895, 2000, 2320, 2900, 3032, 3625, 3790, 5800, 6064, 7250, 7580, 9475, 10991, 11600, 14500, 15160, 18950, 21982, 29000, 30320, 37900, 43964, 47375, 54955, 58000, 75800, 87928, 94750, 109910, 151600, 175856, 189500, 219820, 274775, 379000, 439640, 549550, 758000, 879280, 1099100, 1373875, 2198200, 2747750, 4396400, 5495500, 10991000, 21982000]

約数ペア:

[(1, 21982000), (2, 10991000), (4, 5495500), (5, 4396400), (8, 2747750), (10, 2198200), (16, 1373875), (20, 1099100), (25, 879280), (29, 758000), (40, 549550), (50, 439640), (58, 379000), (80, 274775), (100, 219820), (116, 189500), (125, 175856), (145, 151600), (200, 109910), (232, 94750), (250, 87928), (290, 75800), (379, 58000), (400, 54955), (464, 47375), (500, 43964), (580, 37900), (725, 30320), (758, 29000), (1000, 21982), (1160, 18950), (1450, 15160), (1516, 14500), (1895, 11600), (2000, 10991), (2320, 9475), (2900, 7580), (3032, 7250), (3625, 6064), (3790, 5800)]