21146411

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 26906880

約数和(自身を除く): 5760469

約数列:

[1, 11, 13, 19, 43, 143, 181, 209, 247, 473, 559, 817, 1991, 2353, 2717, 3439, 6149, 7783, 8987, 10621, 25883, 37829, 44707, 85613, 101179, 116831, 147877, 491777, 1112969, 1626647, 1922401, 21146411]

約数ペア:

[(1, 21146411), (11, 1922401), (13, 1626647), (19, 1112969), (43, 491777), (143, 147877), (181, 116831), (209, 101179), (247, 85613), (473, 44707), (559, 37829), (817, 25883), (1991, 10621), (2353, 8987), (2717, 7783), (3439, 6149)]