1216863645

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{2543}}^1$

素因数の和:2666

約数の個数: 64

約数和(自身を含む): 2168709120

約数和(自身を除く): 951845475

約数列:

[1, 3, 5, 15, 19, 23, 57, 69, 73, 95, 115, 219, 285, 345, 365, 437, 1095, 1311, 1387, 1679, 2185, 2543, 4161, 5037, 6555, 6935, 7629, 8395, 12715, 20805, 25185, 31901, 38145, 48317, 58489, 95703, 144951, 159505, 175467, 185639, 241585, 292445, 478515, 556917, 724755, 877335, 928195, 1111291, 2784585, 3333873, 3527141, 4269697, 5556455, 10581423, 12809091, 16669365, 17635705, 21348485, 52907115, 64045455, 81124243, 243372729, 405621215, 1216863645]

約数ペア:

[(1, 1216863645), (3, 405621215), (5, 243372729), (15, 81124243), (19, 64045455), (23, 52907115), (57, 21348485), (69, 17635705), (73, 16669365), (95, 12809091), (115, 10581423), (219, 5556455), (285, 4269697), (345, 3527141), (365, 3333873), (437, 2784585), (1095, 1111291), (1311, 928195), (1387, 877335), (1679, 724755), (2185, 556917), (2543, 478515), (4161, 292445), (5037, 241585), (6555, 185639), (6935, 175467), (7629, 159505), (8395, 144951), (12715, 95703), (20805, 58489), (25185, 48317), (31901, 38145)]