81488640

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{21221}}^1$

素因数の和:21245

約数の個数: 72

約数和(自身を含む): 260266608

約数和(自身を除く): 178777968

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 21221, 42442, 63663, 84884, 106105, 127326, 169768, 212210, 254652, 318315, 339536, 424420, 509304, 636630, 679072, 848840, 1018608, 1273260, 1358144, 1697680, 2037216, 2546520, 2716288, 3395360, 4074432, 5093040, 5432576, 6790720, 8148864, 10186080, 13581440, 16297728, 20372160, 27162880, 40744320, 81488640]

約数ペア:

[(1, 81488640), (2, 40744320), (3, 27162880), (4, 20372160), (5, 16297728), (6, 13581440), (8, 10186080), (10, 8148864), (12, 6790720), (15, 5432576), (16, 5093040), (20, 4074432), (24, 3395360), (30, 2716288), (32, 2546520), (40, 2037216), (48, 1697680), (60, 1358144), (64, 1273260), (80, 1018608), (96, 848840), (120, 679072), (128, 636630), (160, 509304), (192, 424420), (240, 339536), (256, 318315), (320, 254652), (384, 212210), (480, 169768), (640, 127326), (768, 106105), (960, 84884), (1280, 63663), (1920, 42442), (3840, 21221)]