20211900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{757}}^1$

素因数の和:863

約数の個数: 72

約数和(自身を含む): 59214960

約数和(自身を除く): 39003060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 89, 100, 150, 178, 267, 300, 356, 445, 534, 757, 890, 1068, 1335, 1514, 1780, 2225, 2271, 2670, 3028, 3785, 4450, 4542, 5340, 6675, 7570, 8900, 9084, 11355, 13350, 15140, 18925, 22710, 26700, 37850, 45420, 56775, 67373, 75700, 113550, 134746, 202119, 227100, 269492, 336865, 404238, 673730, 808476, 1010595, 1347460, 1684325, 2021190, 3368650, 4042380, 5052975, 6737300, 10105950, 20211900]

約数ペア:

[(1, 20211900), (2, 10105950), (3, 6737300), (4, 5052975), (5, 4042380), (6, 3368650), (10, 2021190), (12, 1684325), (15, 1347460), (20, 1010595), (25, 808476), (30, 673730), (50, 404238), (60, 336865), (75, 269492), (89, 227100), (100, 202119), (150, 134746), (178, 113550), (267, 75700), (300, 67373), (356, 56775), (445, 45420), (534, 37850), (757, 26700), (890, 22710), (1068, 18925), (1335, 15140), (1514, 13350), (1780, 11355), (2225, 9084), (2271, 8900), (2670, 7570), (3028, 6675), (3785, 5340), (4450, 4542)]