443980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 947520

約数和(自身を除く): 503540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 281, 316, 395, 562, 790, 1124, 1405, 1580, 2810, 5620, 22199, 44398, 88796, 110995, 221990, 443980]

約数ペア:

[(1, 443980), (2, 221990), (4, 110995), (5, 88796), (10, 44398), (20, 22199), (79, 5620), (158, 2810), (281, 1580), (316, 1405), (395, 1124), (562, 790)]