20808420820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{719}}^1\times {\mathrm{11959}}^1$

素因数の和:12709

約数の個数: 72

約数和(自身を含む): 48102163200

約数和(自身を除く): 27293742380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 719, 1210, 1438, 2420, 2876, 3595, 7190, 7909, 11959, 14380, 15818, 23918, 31636, 39545, 47836, 59795, 79090, 86999, 119590, 131549, 158180, 173998, 239180, 263098, 347996, 434995, 526196, 657745, 869990, 1315490, 1447039, 1739980, 2630980, 2894078, 5788156, 7235195, 8598521, 14470390, 17197042, 28940780, 34394084, 42992605, 85985210, 94583731, 171970420, 189167462, 378334924, 472918655, 945837310, 1040421041, 1891674620, 2080842082, 4161684164, 5202105205, 10404210410, 20808420820]

約数ペア:

[(1, 20808420820), (2, 10404210410), (4, 5202105205), (5, 4161684164), (10, 2080842082), (11, 1891674620), (20, 1040421041), (22, 945837310), (44, 472918655), (55, 378334924), (110, 189167462), (121, 171970420), (220, 94583731), (242, 85985210), (484, 42992605), (605, 34394084), (719, 28940780), (1210, 17197042), (1438, 14470390), (2420, 8598521), (2876, 7235195), (3595, 5788156), (7190, 2894078), (7909, 2630980), (11959, 1739980), (14380, 1447039), (15818, 1315490), (23918, 869990), (31636, 657745), (39545, 526196), (47836, 434995), (59795, 347996), (79090, 263098), (86999, 239180), (119590, 173998), (131549, 158180)]