21626780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{863}}^1$

素因数の和:1058

約数の個数: 48

約数和(自身を含む): 52254720

約数和(自身を除く): 30627940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 179, 358, 716, 863, 895, 1253, 1726, 1790, 2506, 3452, 3580, 4315, 5012, 6041, 6265, 8630, 12082, 12530, 17260, 24164, 25060, 30205, 60410, 120820, 154477, 308954, 617908, 772385, 1081339, 1544770, 2162678, 3089540, 4325356, 5406695, 10813390, 21626780]

約数ペア:

[(1, 21626780), (2, 10813390), (4, 5406695), (5, 4325356), (7, 3089540), (10, 2162678), (14, 1544770), (20, 1081339), (28, 772385), (35, 617908), (70, 308954), (140, 154477), (179, 120820), (358, 60410), (716, 30205), (863, 25060), (895, 24164), (1253, 17260), (1726, 12530), (1790, 12082), (2506, 8630), (3452, 6265), (3580, 6041), (4315, 5012)]