21000251976

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{179563}}^1$

素因数の和:180026

約数の個数: 64

約数和(自身を含む): 57403019520

約数和(自身を除く): 36402767544

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 264, 443, 886, 1329, 1772, 2658, 3544, 4873, 5316, 9746, 10632, 14619, 19492, 29238, 38984, 58476, 116952, 179563, 359126, 538689, 718252, 1077378, 1436504, 1975193, 2154756, 3950386, 4309512, 5925579, 7900772, 11851158, 15801544, 23702316, 47404632, 79546409, 159092818, 238639227, 318185636, 477278454, 636371272, 875010499, 954556908, 1750020998, 1909113816, 2625031497, 3500041996, 5250062994, 7000083992, 10500125988, 21000251976]

約数ペア:

[(1, 21000251976), (2, 10500125988), (3, 7000083992), (4, 5250062994), (6, 3500041996), (8, 2625031497), (11, 1909113816), (12, 1750020998), (22, 954556908), (24, 875010499), (33, 636371272), (44, 477278454), (66, 318185636), (88, 238639227), (132, 159092818), (264, 79546409), (443, 47404632), (886, 23702316), (1329, 15801544), (1772, 11851158), (2658, 7900772), (3544, 5925579), (4873, 4309512), (5316, 3950386), (9746, 2154756), (10632, 1975193), (14619, 1436504), (19492, 1077378), (29238, 718252), (38984, 538689), (58476, 359126), (116952, 179563)]