85272440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4507}}^1$

素因数の和:4572

約数の個数: 64

約数和(自身を含む): 214220160

約数和(自身を除く): 128947720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1720, 1892, 2365, 3784, 4507, 4730, 9014, 9460, 18028, 18920, 22535, 36056, 45070, 49577, 90140, 99154, 180280, 193801, 198308, 247885, 387602, 396616, 495770, 775204, 969005, 991540, 1550408, 1938010, 1983080, 2131811, 3876020, 4263622, 7752040, 8527244, 10659055, 17054488, 21318110, 42636220, 85272440]

約数ペア:

[(1, 85272440), (2, 42636220), (4, 21318110), (5, 17054488), (8, 10659055), (10, 8527244), (11, 7752040), (20, 4263622), (22, 3876020), (40, 2131811), (43, 1983080), (44, 1938010), (55, 1550408), (86, 991540), (88, 969005), (110, 775204), (172, 495770), (215, 396616), (220, 387602), (344, 247885), (430, 198308), (440, 193801), (473, 180280), (860, 99154), (946, 90140), (1720, 49577), (1892, 45070), (2365, 36056), (3784, 22535), (4507, 18920), (4730, 18028), (9014, 9460)]