821300

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:248

約数の個数: 36

約数和(自身を含む): 1833216

約数和(自身を除く): 1011916

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 191, 215, 382, 430, 764, 860, 955, 1075, 1910, 2150, 3820, 4300, 4775, 8213, 9550, 16426, 19100, 32852, 41065, 82130, 164260, 205325, 410650, 821300]

約数ペア:

[(1, 821300), (2, 410650), (4, 205325), (5, 164260), (10, 82130), (20, 41065), (25, 32852), (43, 19100), (50, 16426), (86, 9550), (100, 8213), (172, 4775), (191, 4300), (215, 3820), (382, 2150), (430, 1910), (764, 1075), (860, 955)]