21347852

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:410

約数の個数: 36

約数和(自身を含む): 40487160

約数和(自身を除く): 19139308

約数列:

[1, 2, 4, 17, 34, 59, 68, 118, 236, 289, 313, 578, 626, 1003, 1156, 1252, 2006, 4012, 5321, 10642, 17051, 18467, 21284, 34102, 36934, 68204, 73868, 90457, 180914, 313939, 361828, 627878, 1255756, 5336963, 10673926, 21347852]

約数ペア:

[(1, 21347852), (2, 10673926), (4, 5336963), (17, 1255756), (34, 627878), (59, 361828), (68, 313939), (118, 180914), (236, 90457), (289, 73868), (313, 68204), (578, 36934), (626, 34102), (1003, 21284), (1156, 18467), (1252, 17051), (2006, 10642), (4012, 5321)]