28991138

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{42509}}^1$

素因数の和:42553

約数の個数: 16

約数和(自身を含む): 48971520

約数和(自身を除く): 19980382

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 42509, 85018, 467599, 935198, 1317779, 2635558, 14495569, 28991138]

約数ペア:

[(1, 28991138), (2, 14495569), (11, 2635558), (22, 1317779), (31, 935198), (62, 467599), (341, 85018), (682, 42509)]