388540420

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{73867}}^1$

素因数の和:74139

約数の個数: 24

約数和(自身を含む): 819048384

約数和(自身を除く): 430507964

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 5260, 73867, 147734, 295468, 369335, 738670, 1477340, 19427021, 38854042, 77708084, 97135105, 194270210, 388540420]

約数ペア:

[(1, 388540420), (2, 194270210), (4, 97135105), (5, 77708084), (10, 38854042), (20, 19427021), (263, 1477340), (526, 738670), (1052, 369335), (1315, 295468), (2630, 147734), (5260, 73867)]