212317721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{617}}^1$

素因数の和:785

約数の個数: 32

約数和(自身を含む): 274095360

約数和(自身を除く): 61777639

約数列:

[1, 7, 11, 41, 77, 109, 287, 451, 617, 763, 1199, 3157, 4319, 4469, 6787, 8393, 25297, 31283, 47509, 49159, 67253, 177079, 278267, 344113, 470771, 739783, 1947869, 2757373, 5178481, 19301611, 30331103, 212317721]

約数ペア:

[(1, 212317721), (7, 30331103), (11, 19301611), (41, 5178481), (77, 2757373), (109, 1947869), (287, 739783), (451, 470771), (617, 344113), (763, 278267), (1199, 177079), (3157, 67253), (4319, 49159), (4469, 47509), (6787, 31283), (8393, 25297)]