28303240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{373}}^1$

素因数の和:662

約数の個数: 64

約数和(自身を含む): 73244160

約数和(自身を除く): 44940920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 271, 280, 373, 542, 746, 1084, 1355, 1492, 1865, 1897, 2168, 2611, 2710, 2984, 3730, 3794, 5222, 5420, 7460, 7588, 9485, 10444, 10840, 13055, 14920, 15176, 18970, 20888, 26110, 37940, 52220, 75880, 101083, 104440, 202166, 404332, 505415, 707581, 808664, 1010830, 1415162, 2021660, 2830324, 3537905, 4043320, 5660648, 7075810, 14151620, 28303240]

約数ペア:

[(1, 28303240), (2, 14151620), (4, 7075810), (5, 5660648), (7, 4043320), (8, 3537905), (10, 2830324), (14, 2021660), (20, 1415162), (28, 1010830), (35, 808664), (40, 707581), (56, 505415), (70, 404332), (140, 202166), (271, 104440), (280, 101083), (373, 75880), (542, 52220), (746, 37940), (1084, 26110), (1355, 20888), (1492, 18970), (1865, 15176), (1897, 14920), (2168, 13055), (2611, 10840), (2710, 10444), (2984, 9485), (3730, 7588), (3794, 7460), (5222, 5420)]