81265212

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{829}}^1$

素因数の和:1235

約数の個数: 72

約数和(自身を含む): 235653600

約数和(自身を除く): 154388388

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 389, 778, 829, 1167, 1556, 1658, 2334, 2487, 2723, 3316, 3501, 4668, 4974, 5446, 5803, 7002, 7461, 8169, 9948, 10892, 11606, 14004, 14922, 16338, 17409, 23212, 24507, 29844, 32676, 34818, 49014, 52227, 69636, 98028, 104454, 208908, 322481, 644962, 967443, 1289924, 1934886, 2257367, 2902329, 3869772, 4514734, 5804658, 6772101, 9029468, 11609316, 13544202, 20316303, 27088404, 40632606, 81265212]

約数ペア:

[(1, 81265212), (2, 40632606), (3, 27088404), (4, 20316303), (6, 13544202), (7, 11609316), (9, 9029468), (12, 6772101), (14, 5804658), (18, 4514734), (21, 3869772), (28, 2902329), (36, 2257367), (42, 1934886), (63, 1289924), (84, 967443), (126, 644962), (252, 322481), (389, 208908), (778, 104454), (829, 98028), (1167, 69636), (1556, 52227), (1658, 49014), (2334, 34818), (2487, 32676), (2723, 29844), (3316, 24507), (3501, 23212), (4668, 17409), (4974, 16338), (5446, 14922), (5803, 14004), (7002, 11606), (7461, 10892), (8169, 9948)]