20618514

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{241}}^1$

素因数の和:360

約数の個数: 72

約数和(自身を含む): 52720668

約数和(自身を除く): 32102154

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 97, 98, 126, 147, 194, 241, 291, 294, 441, 482, 582, 679, 723, 873, 882, 1358, 1446, 1687, 1746, 2037, 2169, 3374, 4074, 4338, 4753, 5061, 6111, 9506, 10122, 11809, 12222, 14259, 15183, 23377, 23618, 28518, 30366, 35427, 42777, 46754, 70131, 70854, 85554, 106281, 140262, 163639, 210393, 212562, 327278, 420786, 490917, 981834, 1145473, 1472751, 2290946, 2945502, 3436419, 6872838, 10309257, 20618514]

約数ペア:

[(1, 20618514), (2, 10309257), (3, 6872838), (6, 3436419), (7, 2945502), (9, 2290946), (14, 1472751), (18, 1145473), (21, 981834), (42, 490917), (49, 420786), (63, 327278), (97, 212562), (98, 210393), (126, 163639), (147, 140262), (194, 106281), (241, 85554), (291, 70854), (294, 70131), (441, 46754), (482, 42777), (582, 35427), (679, 30366), (723, 28518), (873, 23618), (882, 23377), (1358, 15183), (1446, 14259), (1687, 12222), (1746, 11809), (2037, 10122), (2169, 9506), (3374, 6111), (4074, 5061), (4338, 4753)]