1279689980

素因数分解:

$2^2\times 5^1\times {\mathrm{1619}}^1\times {\mathrm{39521}}^1$

素因数の和:41149

約数の個数: 24

約数和(自身を含む): 2689076880

約数和(自身を除く): 1409386900

約数列:

[1, 2, 4, 5, 10, 20, 1619, 3238, 6476, 8095, 16190, 32380, 39521, 79042, 158084, 197605, 395210, 790420, 63984499, 127968998, 255937996, 319922495, 639844990, 1279689980]

約数ペア:

[(1, 1279689980), (2, 639844990), (4, 319922495), (5, 255937996), (10, 127968998), (20, 63984499), (1619, 790420), (3238, 395210), (6476, 197605), (8095, 158084), (16190, 79042), (32380, 39521)]