209399421

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53323}}^1$

素因数の和:53361

約数の個数: 32

約数和(自身を含む): 368575488

約数和(自身を除く): 159176067

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 53323, 159969, 373261, 586553, 906491, 1119783, 1759659, 2719473, 4105871, 6345437, 9971401, 12317613, 19036311, 29914203, 69799807, 209399421]

約数ペア:

[(1, 209399421), (3, 69799807), (7, 29914203), (11, 19036311), (17, 12317613), (21, 9971401), (33, 6345437), (51, 4105871), (77, 2719473), (119, 1759659), (187, 1119783), (231, 906491), (357, 586553), (561, 373261), (1309, 159969), (3927, 53323)]