1261520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1213}}^1$

素因数の和:1239

約数の個数: 40

約数和(自身を含む): 3161256

約数和(自身を除く): 1899736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1213, 2426, 4852, 6065, 9704, 12130, 15769, 19408, 24260, 31538, 48520, 63076, 78845, 97040, 126152, 157690, 252304, 315380, 630760, 1261520]

約数ペア:

[(1, 1261520), (2, 630760), (4, 315380), (5, 252304), (8, 157690), (10, 126152), (13, 97040), (16, 78845), (20, 63076), (26, 48520), (40, 31538), (52, 24260), (65, 19408), (80, 15769), (104, 12130), (130, 9704), (208, 6065), (260, 4852), (520, 2426), (1040, 1213)]