21011816

素因数分解:

$2^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{6151}}^1$

素因数の和:6225

約数の個数: 32

約数和(自身を含む): 45770880

約数和(自身を除く): 24759064

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 61, 122, 244, 427, 488, 854, 1708, 3416, 6151, 12302, 24604, 43057, 49208, 86114, 172228, 344456, 375211, 750422, 1500844, 2626477, 3001688, 5252954, 10505908, 21011816]

約数ペア:

[(1, 21011816), (2, 10505908), (4, 5252954), (7, 3001688), (8, 2626477), (14, 1500844), (28, 750422), (56, 375211), (61, 344456), (122, 172228), (244, 86114), (427, 49208), (488, 43057), (854, 24604), (1708, 12302), (3416, 6151)]