20755240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 52176960

約数和(自身を除く): 31421720

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, 1097, 1720, 1892, 2194, 2365, 3784, 4388, 4730, 5485, 8776, 9460, 10970, 12067, 18920, 21940, 24134, 43880, 47171, 48268, 60335, 94342, 96536, 120670, 188684, 235855, 241340, 377368, 471710, 482680, 518881, 943420, 1037762, 1886840, 2075524, 2594405, 4151048, 5188810, 10377620, 20755240]

約数ペア:

[(1, 20755240), (2, 10377620), (4, 5188810), (5, 4151048), (8, 2594405), (10, 2075524), (11, 1886840), (20, 1037762), (22, 943420), (40, 518881), (43, 482680), (44, 471710), (55, 377368), (86, 241340), (88, 235855), (110, 188684), (172, 120670), (215, 96536), (220, 94342), (344, 60335), (430, 48268), (440, 47171), (473, 43880), (860, 24134), (946, 21940), (1097, 18920), (1720, 12067), (1892, 10970), (2194, 9460), (2365, 8776), (3784, 5485), (4388, 4730)]