21159572

素因数分解:

$2^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1213}}^1$

素因数の和:1320

約数の個数: 36

約数和(自身を含む): 43594740

約数和(自身を除く): 22435168

約数列:

[1, 2, 4, 7, 14, 28, 49, 89, 98, 178, 196, 356, 623, 1213, 1246, 2426, 2492, 4361, 4852, 8491, 8722, 16982, 17444, 33964, 59437, 107957, 118874, 215914, 237748, 431828, 755699, 1511398, 3022796, 5289893, 10579786, 21159572]

約数ペア:

[(1, 21159572), (2, 10579786), (4, 5289893), (7, 3022796), (14, 1511398), (28, 755699), (49, 431828), (89, 237748), (98, 215914), (178, 118874), (196, 107957), (356, 59437), (623, 33964), (1213, 17444), (1246, 16982), (2426, 8722), (2492, 8491), (4361, 4852)]