21620668

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{317}}^1$

素因数の和:414

約数の個数: 36

約数和(自身を含む): 41002920

約数和(自身を除く): 19382252

約数列:

[1, 2, 4, 17, 34, 59, 68, 118, 236, 289, 317, 578, 634, 1003, 1156, 1268, 2006, 4012, 5389, 10778, 17051, 18703, 21556, 34102, 37406, 68204, 74812, 91613, 183226, 317951, 366452, 635902, 1271804, 5405167, 10810334, 21620668]

約数ペア:

[(1, 21620668), (2, 10810334), (4, 5405167), (17, 1271804), (34, 635902), (59, 366452), (68, 317951), (118, 183226), (236, 91613), (289, 74812), (317, 68204), (578, 37406), (634, 34102), (1003, 21556), (1156, 18703), (1268, 17051), (2006, 10778), (4012, 5389)]