81781168

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{38431}}^1$

素因数の和:38465

約数の個数: 40

約数和(自身を含む): 190622720

約数和(自身を除く): 108841552

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 38431, 76862, 153724, 269017, 307448, 538034, 614896, 730189, 1076068, 1460378, 2152136, 2920756, 4304272, 5111323, 5841512, 10222646, 11683024, 20445292, 40890584, 81781168]

約数ペア:

[(1, 81781168), (2, 40890584), (4, 20445292), (7, 11683024), (8, 10222646), (14, 5841512), (16, 5111323), (19, 4304272), (28, 2920756), (38, 2152136), (56, 1460378), (76, 1076068), (112, 730189), (133, 614896), (152, 538034), (266, 307448), (304, 269017), (532, 153724), (1064, 76862), (2128, 38431)]