21350924

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^2\times {\mathrm{557}}^1$

素因数の和:642

約数の個数: 36

約数和(自身を含む): 43965936

約数和(自身を除く): 22615012

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 557, 1036, 1114, 1369, 2228, 2738, 3899, 5476, 7798, 9583, 15596, 19166, 20609, 38332, 41218, 82436, 144263, 288526, 577052, 762533, 1525066, 3050132, 5337731, 10675462, 21350924]

約数ペア:

[(1, 21350924), (2, 10675462), (4, 5337731), (7, 3050132), (14, 1525066), (28, 762533), (37, 577052), (74, 288526), (148, 144263), (259, 82436), (518, 41218), (557, 38332), (1036, 20609), (1114, 19166), (1369, 15596), (2228, 9583), (2738, 7798), (3899, 5476)]