644140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 1596672

約数和(自身を除く): 952532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 107, 140, 172, 214, 215, 301, 428, 430, 535, 602, 749, 860, 1070, 1204, 1498, 1505, 2140, 2996, 3010, 3745, 4601, 6020, 7490, 9202, 14980, 18404, 23005, 32207, 46010, 64414, 92020, 128828, 161035, 322070, 644140]

約数ペア:

[(1, 644140), (2, 322070), (4, 161035), (5, 128828), (7, 92020), (10, 64414), (14, 46010), (20, 32207), (28, 23005), (35, 18404), (43, 14980), (70, 9202), (86, 7490), (107, 6020), (140, 4601), (172, 3745), (214, 3010), (215, 2996), (301, 2140), (428, 1505), (430, 1498), (535, 1204), (602, 1070), (749, 860)]