21581494

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:372

約数の個数: 32

約数和(自身を含む): 36578304

約数和(自身を除く): 14996810

約数列:

[1, 2, 11, 22, 53, 83, 106, 166, 223, 446, 583, 913, 1166, 1826, 2453, 4399, 4906, 8798, 11819, 18509, 23638, 37018, 48389, 96778, 130009, 203599, 260018, 407198, 980977, 1961954, 10790747, 21581494]

約数ペア:

[(1, 21581494), (2, 10790747), (11, 1961954), (22, 980977), (53, 407198), (83, 260018), (106, 203599), (166, 130009), (223, 96778), (446, 48389), (583, 37018), (913, 23638), (1166, 18509), (1826, 11819), (2453, 8798), (4399, 4906)]