20451210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1279}}^1$

素因数の和:1343

約数の個数: 64

約数和(自身を含む): 54190080

約数和(自身を除く): 33738870

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 41, 65, 78, 82, 123, 130, 195, 205, 246, 390, 410, 533, 615, 1066, 1230, 1279, 1599, 2558, 2665, 3198, 3837, 5330, 6395, 7674, 7995, 12790, 15990, 16627, 19185, 33254, 38370, 49881, 52439, 83135, 99762, 104878, 157317, 166270, 249405, 262195, 314634, 498810, 524390, 681707, 786585, 1363414, 1573170, 2045121, 3408535, 4090242, 6817070, 10225605, 20451210]

約数ペア:

[(1, 20451210), (2, 10225605), (3, 6817070), (5, 4090242), (6, 3408535), (10, 2045121), (13, 1573170), (15, 1363414), (26, 786585), (30, 681707), (39, 524390), (41, 498810), (65, 314634), (78, 262195), (82, 249405), (123, 166270), (130, 157317), (195, 104878), (205, 99762), (246, 83135), (390, 52439), (410, 49881), (533, 38370), (615, 33254), (1066, 19185), (1230, 16627), (1279, 15990), (1599, 12790), (2558, 7995), (2665, 7674), (3198, 6395), (3837, 5330)]