201787820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18049}}^1$

素因数の和:18114

約数の個数: 48

約数和(自身を含む): 466989600

約数和(自身を除く): 265201780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 11180, 18049, 36098, 72196, 90245, 180490, 234637, 360980, 469274, 776107, 938548, 1173185, 1552214, 2346370, 3104428, 3880535, 4692740, 7761070, 10089391, 15522140, 20178782, 40357564, 50446955, 100893910, 201787820]

約数ペア:

[(1, 201787820), (2, 100893910), (4, 50446955), (5, 40357564), (10, 20178782), (13, 15522140), (20, 10089391), (26, 7761070), (43, 4692740), (52, 3880535), (65, 3104428), (86, 2346370), (130, 1552214), (172, 1173185), (215, 938548), (260, 776107), (430, 469274), (559, 360980), (860, 234637), (1118, 180490), (2236, 90245), (2795, 72196), (5590, 36098), (11180, 18049)]