221182520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13721}}^1$

素因数の和:13776

約数の個数: 64

約数和(自身を含む): 553271040

約数和(自身を除く): 332088520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 13721, 16120, 27442, 54884, 68605, 109768, 137210, 178373, 274420, 356746, 425351, 548840, 713492, 850702, 891865, 1426984, 1701404, 1783730, 2126755, 3402808, 3567460, 4253510, 5529563, 7134920, 8507020, 11059126, 17014040, 22118252, 27647815, 44236504, 55295630, 110591260, 221182520]

約数ペア:

[(1, 221182520), (2, 110591260), (4, 55295630), (5, 44236504), (8, 27647815), (10, 22118252), (13, 17014040), (20, 11059126), (26, 8507020), (31, 7134920), (40, 5529563), (52, 4253510), (62, 3567460), (65, 3402808), (104, 2126755), (124, 1783730), (130, 1701404), (155, 1426984), (248, 891865), (260, 850702), (310, 713492), (403, 548840), (520, 425351), (620, 356746), (806, 274420), (1240, 178373), (1612, 137210), (2015, 109768), (3224, 68605), (4030, 54884), (8060, 27442), (13721, 16120)]