81992144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20747}}^1$

素因数の和:20787

約数の個数: 40

約数和(自身を含む): 180092640

約数和(自身を除く): 98100496

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 20747, 41494, 82988, 165976, 269711, 331952, 394193, 539422, 788386, 1078844, 1576772, 2157688, 3153544, 4315376, 5124509, 6307088, 10249018, 20498036, 40996072, 81992144]

約数ペア:

[(1, 81992144), (2, 40996072), (4, 20498036), (8, 10249018), (13, 6307088), (16, 5124509), (19, 4315376), (26, 3153544), (38, 2157688), (52, 1576772), (76, 1078844), (104, 788386), (152, 539422), (208, 394193), (247, 331952), (304, 269711), (494, 165976), (988, 82988), (1976, 41494), (3952, 20747)]