20188240

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{617}}^1$

素因数の和:1039

約数の個数: 40

約数和(自身を含む): 47128680

約数和(自身を除く): 26940440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 617, 818, 1234, 1636, 2045, 2468, 3085, 3272, 4090, 4936, 6170, 6544, 8180, 9872, 12340, 16360, 24680, 32720, 49360, 252353, 504706, 1009412, 1261765, 2018824, 2523530, 4037648, 5047060, 10094120, 20188240]

約数ペア:

[(1, 20188240), (2, 10094120), (4, 5047060), (5, 4037648), (8, 2523530), (10, 2018824), (16, 1261765), (20, 1009412), (40, 504706), (80, 252353), (409, 49360), (617, 32720), (818, 24680), (1234, 16360), (1636, 12340), (2045, 9872), (2468, 8180), (3085, 6544), (3272, 6170), (4090, 4936)]