138306440

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{13147}}^1$

素因数の和:13421

約数の個数: 32

約数和(自身を含む): 312396480

約数和(自身を除く): 174090040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 10520, 13147, 26294, 52588, 65735, 105176, 131470, 262940, 525880, 3457661, 6915322, 13830644, 17288305, 27661288, 34576610, 69153220, 138306440]

約数ペア:

[(1, 138306440), (2, 69153220), (4, 34576610), (5, 27661288), (8, 17288305), (10, 13830644), (20, 6915322), (40, 3457661), (263, 525880), (526, 262940), (1052, 131470), (1315, 105176), (2104, 65735), (2630, 52588), (5260, 26294), (10520, 13147)]