17979920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{331}}^1$

素因数の和:448

約数の個数: 80

約数和(自身を含む): 48413568

約数和(自身を除く): 30433648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 97, 112, 140, 194, 280, 331, 388, 485, 560, 662, 679, 776, 970, 1324, 1358, 1552, 1655, 1940, 2317, 2648, 2716, 3310, 3395, 3880, 4634, 5296, 5432, 6620, 6790, 7760, 9268, 10864, 11585, 13240, 13580, 18536, 23170, 26480, 27160, 32107, 37072, 46340, 54320, 64214, 92680, 128428, 160535, 185360, 224749, 256856, 321070, 449498, 513712, 642140, 898996, 1123745, 1284280, 1797992, 2247490, 2568560, 3595984, 4494980, 8989960, 17979920]

約数ペア:

[(1, 17979920), (2, 8989960), (4, 4494980), (5, 3595984), (7, 2568560), (8, 2247490), (10, 1797992), (14, 1284280), (16, 1123745), (20, 898996), (28, 642140), (35, 513712), (40, 449498), (56, 321070), (70, 256856), (80, 224749), (97, 185360), (112, 160535), (140, 128428), (194, 92680), (280, 64214), (331, 54320), (388, 46340), (485, 37072), (560, 32107), (662, 27160), (679, 26480), (776, 23170), (970, 18536), (1324, 13580), (1358, 13240), (1552, 11585), (1655, 10864), (1940, 9268), (2317, 7760), (2648, 6790), (2716, 6620), (3310, 5432), (3395, 5296), (3880, 4634)]