18261520

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3407}}^1$

素因数の和:3487

約数の個数: 40

約数和(自身を含む): 43104384

約数和(自身を除く): 24842864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3407, 5360, 6814, 13628, 17035, 27256, 34070, 54512, 68140, 136280, 228269, 272560, 456538, 913076, 1141345, 1826152, 2282690, 3652304, 4565380, 9130760, 18261520]

約数ペア:

[(1, 18261520), (2, 9130760), (4, 4565380), (5, 3652304), (8, 2282690), (10, 1826152), (16, 1141345), (20, 913076), (40, 456538), (67, 272560), (80, 228269), (134, 136280), (268, 68140), (335, 54512), (536, 34070), (670, 27256), (1072, 17035), (1340, 13628), (2680, 6814), (3407, 5360)]