18995840

素因数分解:

$2^7\times 5^1\times {\mathrm{67}}^1\times {\mathrm{443}}^1$

素因数の和:529

約数の個数: 64

約数和(自身を含む): 46193760

約数和(自身を除く): 27197920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 268, 320, 335, 443, 536, 640, 670, 886, 1072, 1340, 1772, 2144, 2215, 2680, 3544, 4288, 4430, 5360, 7088, 8576, 8860, 10720, 14176, 17720, 21440, 28352, 29681, 35440, 42880, 56704, 59362, 70880, 118724, 141760, 148405, 237448, 283520, 296810, 474896, 593620, 949792, 1187240, 1899584, 2374480, 3799168, 4748960, 9497920, 18995840]

約数ペア:

[(1, 18995840), (2, 9497920), (4, 4748960), (5, 3799168), (8, 2374480), (10, 1899584), (16, 1187240), (20, 949792), (32, 593620), (40, 474896), (64, 296810), (67, 283520), (80, 237448), (128, 148405), (134, 141760), (160, 118724), (268, 70880), (320, 59362), (335, 56704), (443, 42880), (536, 35440), (640, 29681), (670, 28352), (886, 21440), (1072, 17720), (1340, 14176), (1772, 10720), (2144, 8860), (2215, 8576), (2680, 7088), (3544, 5360), (4288, 4430)]