19939946

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{229}}^1$

素因数の和:458

約数の個数: 32

約数和(自身を含む): 34428240

約数和(自身を除く): 14488294

約数列:

[1, 2, 13, 17, 26, 34, 197, 221, 229, 394, 442, 458, 2561, 2977, 3349, 3893, 5122, 5954, 6698, 7786, 43537, 45113, 50609, 87074, 90226, 101218, 586469, 766921, 1172938, 1533842, 9969973, 19939946]

約数ペア:

[(1, 19939946), (2, 9969973), (13, 1533842), (17, 1172938), (26, 766921), (34, 586469), (197, 101218), (221, 90226), (229, 87074), (394, 50609), (442, 45113), (458, 43537), (2561, 7786), (2977, 6698), (3349, 5954), (3893, 5122)]