21777780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1$

素因数の和:445

約数の個数: 96

約数和(自身を含む): 65286144

約数和(自身を除く): 43508364

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 43, 46, 60, 69, 86, 92, 115, 129, 138, 172, 215, 230, 258, 276, 345, 367, 430, 460, 516, 645, 690, 734, 860, 989, 1101, 1290, 1380, 1468, 1835, 1978, 2202, 2580, 2967, 3670, 3956, 4404, 4945, 5505, 5934, 7340, 8441, 9890, 11010, 11868, 14835, 15781, 16882, 19780, 22020, 25323, 29670, 31562, 33764, 42205, 47343, 50646, 59340, 63124, 78905, 84410, 94686, 101292, 126615, 157810, 168820, 189372, 236715, 253230, 315620, 362963, 473430, 506460, 725926, 946860, 1088889, 1451852, 1814815, 2177778, 3629630, 4355556, 5444445, 7259260, 10888890, 21777780]

約数ペア:

[(1, 21777780), (2, 10888890), (3, 7259260), (4, 5444445), (5, 4355556), (6, 3629630), (10, 2177778), (12, 1814815), (15, 1451852), (20, 1088889), (23, 946860), (30, 725926), (43, 506460), (46, 473430), (60, 362963), (69, 315620), (86, 253230), (92, 236715), (115, 189372), (129, 168820), (138, 157810), (172, 126615), (215, 101292), (230, 94686), (258, 84410), (276, 78905), (345, 63124), (367, 59340), (430, 50646), (460, 47343), (516, 42205), (645, 33764), (690, 31562), (734, 29670), (860, 25323), (989, 22020), (1101, 19780), (1290, 16882), (1380, 15781), (1468, 14835), (1835, 11868), (1978, 11010), (2202, 9890), (2580, 8441), (2967, 7340), (3670, 5934), (3956, 5505), (4404, 4945)]