17721756

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1993}}^1$

素因数の和:2035

約数の個数: 72

約数和(自身を含む): 50807120

約数和(自身を除く): 33085364

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 1993, 2223, 2964, 3986, 4446, 5979, 7972, 8892, 11958, 17937, 23916, 25909, 35874, 37867, 51818, 71748, 75734, 77727, 103636, 113601, 151468, 155454, 227202, 233181, 310908, 340803, 454404, 466362, 492271, 681606, 932724, 984542, 1363212, 1476813, 1969084, 2953626, 4430439, 5907252, 8860878, 17721756]

約数ペア:

[(1, 17721756), (2, 8860878), (3, 5907252), (4, 4430439), (6, 2953626), (9, 1969084), (12, 1476813), (13, 1363212), (18, 984542), (19, 932724), (26, 681606), (36, 492271), (38, 466362), (39, 454404), (52, 340803), (57, 310908), (76, 233181), (78, 227202), (114, 155454), (117, 151468), (156, 113601), (171, 103636), (228, 77727), (234, 75734), (247, 71748), (342, 51818), (468, 37867), (494, 35874), (684, 25909), (741, 23916), (988, 17937), (1482, 11958), (1993, 8892), (2223, 7972), (2964, 5979), (3986, 4446)]