138839140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{1543}}^1$

素因数の和:1972

約数の個数: 48

約数和(自身を含む): 319052160

約数和(自身を除く): 180213020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 409, 818, 1543, 1636, 2045, 3086, 4090, 4499, 6172, 7715, 8180, 8998, 15430, 16973, 17996, 22495, 30860, 33946, 44990, 67892, 84865, 89980, 169730, 339460, 631087, 1262174, 2524348, 3155435, 6310870, 6941957, 12621740, 13883914, 27767828, 34709785, 69419570, 138839140]

約数ペア:

[(1, 138839140), (2, 69419570), (4, 34709785), (5, 27767828), (10, 13883914), (11, 12621740), (20, 6941957), (22, 6310870), (44, 3155435), (55, 2524348), (110, 1262174), (220, 631087), (409, 339460), (818, 169730), (1543, 89980), (1636, 84865), (2045, 67892), (3086, 44990), (4090, 33946), (4499, 30860), (6172, 22495), (7715, 17996), (8180, 16973), (8998, 15430)]