19621240

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3529}}^1$

素因数の和:3679

約数の個数: 32

約数和(自身を含む): 44478000

約数和(自身を除く): 24856760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3529, 5560, 7058, 14116, 17645, 28232, 35290, 70580, 141160, 490531, 981062, 1962124, 2452655, 3924248, 4905310, 9810620, 19621240]

約数ペア:

[(1, 19621240), (2, 9810620), (4, 4905310), (5, 3924248), (8, 2452655), (10, 1962124), (20, 981062), (40, 490531), (139, 141160), (278, 70580), (556, 35290), (695, 28232), (1112, 17645), (1390, 14116), (2780, 7058), (3529, 5560)]