31275520

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:685

約数の個数: 80

約数和(自身を含む): 79057440

約数和(自身を除く): 47781920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 512, 608, 640, 643, 760, 1216, 1280, 1286, 1520, 2432, 2560, 2572, 3040, 3215, 4864, 5144, 6080, 6430, 9728, 10288, 12160, 12217, 12860, 20576, 24320, 24434, 25720, 41152, 48640, 48868, 51440, 61085, 82304, 97736, 102880, 122170, 164608, 195472, 205760, 244340, 329216, 390944, 411520, 488680, 781888, 823040, 977360, 1563776, 1646080, 1954720, 3127552, 3909440, 6255104, 7818880, 15637760, 31275520]

約数ペア:

[(1, 31275520), (2, 15637760), (4, 7818880), (5, 6255104), (8, 3909440), (10, 3127552), (16, 1954720), (19, 1646080), (20, 1563776), (32, 977360), (38, 823040), (40, 781888), (64, 488680), (76, 411520), (80, 390944), (95, 329216), (128, 244340), (152, 205760), (160, 195472), (190, 164608), (256, 122170), (304, 102880), (320, 97736), (380, 82304), (512, 61085), (608, 51440), (640, 48868), (643, 48640), (760, 41152), (1216, 25720), (1280, 24434), (1286, 24320), (1520, 20576), (2432, 12860), (2560, 12217), (2572, 12160), (3040, 10288), (3215, 9728), (4864, 6430), (5144, 6080)]