21731200

素因数分解:

$2^7\times 5^2\times {\mathrm{6791}}^1$

素因数の和:6815

約数の個数: 48

約数和(自身を含む): 53690760

約数和(自身を除く): 31959560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6791, 13582, 27164, 33955, 54328, 67910, 108656, 135820, 169775, 217312, 271640, 339550, 434624, 543280, 679100, 869248, 1086560, 1358200, 2173120, 2716400, 4346240, 5432800, 10865600, 21731200]

約数ペア:

[(1, 21731200), (2, 10865600), (4, 5432800), (5, 4346240), (8, 2716400), (10, 2173120), (16, 1358200), (20, 1086560), (25, 869248), (32, 679100), (40, 543280), (50, 434624), (64, 339550), (80, 271640), (100, 217312), (128, 169775), (160, 135820), (200, 108656), (320, 67910), (400, 54328), (640, 33955), (800, 27164), (1600, 13582), (3200, 6791)]