18800012

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 42900480

約数和(自身を除く): 24100468

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 121, 124, 154, 179, 217, 242, 308, 341, 358, 434, 484, 682, 716, 847, 868, 1253, 1364, 1694, 1969, 2387, 2506, 3388, 3751, 3938, 4774, 5012, 5549, 7502, 7876, 9548, 11098, 13783, 15004, 21659, 22196, 26257, 27566, 38843, 43318, 52514, 55132, 61039, 77686, 86636, 105028, 122078, 151613, 155372, 244156, 303226, 427273, 606452, 671429, 854546, 1342858, 1709092, 2685716, 4700003, 9400006, 18800012]

約数ペア:

[(1, 18800012), (2, 9400006), (4, 4700003), (7, 2685716), (11, 1709092), (14, 1342858), (22, 854546), (28, 671429), (31, 606452), (44, 427273), (62, 303226), (77, 244156), (121, 155372), (124, 151613), (154, 122078), (179, 105028), (217, 86636), (242, 77686), (308, 61039), (341, 55132), (358, 52514), (434, 43318), (484, 38843), (682, 27566), (716, 26257), (847, 22196), (868, 21659), (1253, 15004), (1364, 13783), (1694, 11098), (1969, 9548), (2387, 7876), (2506, 7502), (3388, 5549), (3751, 5012), (3938, 4774)]