18143440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:380

約数の個数: 80

約数和(自身を含む): 48746880

約数和(自身を除く): 30603440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 179, 181, 280, 358, 362, 560, 716, 724, 895, 905, 1253, 1267, 1432, 1448, 1790, 1810, 2506, 2534, 2864, 2896, 3580, 3620, 5012, 5068, 6265, 6335, 7160, 7240, 10024, 10136, 12530, 12670, 14320, 14480, 20048, 20272, 25060, 25340, 32399, 50120, 50680, 64798, 100240, 101360, 129596, 161995, 226793, 259192, 323990, 453586, 518384, 647980, 907172, 1133965, 1295960, 1814344, 2267930, 2591920, 3628688, 4535860, 9071720, 18143440]

約数ペア:

[(1, 18143440), (2, 9071720), (4, 4535860), (5, 3628688), (7, 2591920), (8, 2267930), (10, 1814344), (14, 1295960), (16, 1133965), (20, 907172), (28, 647980), (35, 518384), (40, 453586), (56, 323990), (70, 259192), (80, 226793), (112, 161995), (140, 129596), (179, 101360), (181, 100240), (280, 64798), (358, 50680), (362, 50120), (560, 32399), (716, 25340), (724, 25060), (895, 20272), (905, 20048), (1253, 14480), (1267, 14320), (1432, 12670), (1448, 12530), (1790, 10136), (1810, 10024), (2506, 7240), (2534, 7160), (2864, 6335), (2896, 6265), (3580, 5068), (3620, 5012)]