28265960

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:330

約数の個数: 64

約数和(自身を含む): 66096000

約数和(自身を除く): 37830040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 67, 106, 134, 199, 212, 265, 268, 335, 398, 424, 530, 536, 670, 796, 995, 1060, 1340, 1592, 1990, 2120, 2680, 3551, 3980, 7102, 7960, 10547, 13333, 14204, 17755, 21094, 26666, 28408, 35510, 42188, 52735, 53332, 66665, 71020, 84376, 105470, 106664, 133330, 142040, 210940, 266660, 421880, 533320, 706649, 1413298, 2826596, 3533245, 5653192, 7066490, 14132980, 28265960]

約数ペア:

[(1, 28265960), (2, 14132980), (4, 7066490), (5, 5653192), (8, 3533245), (10, 2826596), (20, 1413298), (40, 706649), (53, 533320), (67, 421880), (106, 266660), (134, 210940), (199, 142040), (212, 133330), (265, 106664), (268, 105470), (335, 84376), (398, 71020), (424, 66665), (530, 53332), (536, 52735), (670, 42188), (796, 35510), (995, 28408), (1060, 26666), (1340, 21094), (1592, 17755), (1990, 14204), (2120, 13333), (2680, 10547), (3551, 7960), (3980, 7102)]