405997840

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1\times {\mathrm{947}}^1$

素因数の和:1216

約数の個数: 80

約数和(自身を含む): 990258048

約数和(自身を除く): 584260208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 233, 368, 460, 466, 920, 932, 947, 1165, 1840, 1864, 1894, 2330, 3728, 3788, 4660, 4735, 5359, 7576, 9320, 9470, 10718, 15152, 18640, 18940, 21436, 21781, 26795, 37880, 42872, 43562, 53590, 75760, 85744, 87124, 107180, 108905, 174248, 214360, 217810, 220651, 348496, 428720, 435620, 441302, 871240, 882604, 1103255, 1742480, 1765208, 2206510, 3530416, 4413020, 5074973, 8826040, 10149946, 17652080, 20299892, 25374865, 40599784, 50749730, 81199568, 101499460, 202998920, 405997840]

約数ペア:

[(1, 405997840), (2, 202998920), (4, 101499460), (5, 81199568), (8, 50749730), (10, 40599784), (16, 25374865), (20, 20299892), (23, 17652080), (40, 10149946), (46, 8826040), (80, 5074973), (92, 4413020), (115, 3530416), (184, 2206510), (230, 1765208), (233, 1742480), (368, 1103255), (460, 882604), (466, 871240), (920, 441302), (932, 435620), (947, 428720), (1165, 348496), (1840, 220651), (1864, 217810), (1894, 214360), (2330, 174248), (3728, 108905), (3788, 107180), (4660, 87124), (4735, 85744), (5359, 75760), (7576, 53590), (9320, 43562), (9470, 42872), (10718, 37880), (15152, 26795), (18640, 21781), (18940, 21436)]