21082020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18493}}^1$

素因数の和:18524

約数の個数: 48

約数和(自身を含む): 62139840

約数和(自身を除く): 41057820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 18493, 36986, 55479, 73972, 92465, 110958, 184930, 221916, 277395, 351367, 369860, 554790, 702734, 1054101, 1109580, 1405468, 1756835, 2108202, 3513670, 4216404, 5270505, 7027340, 10541010, 21082020]

約数ペア:

[(1, 21082020), (2, 10541010), (3, 7027340), (4, 5270505), (5, 4216404), (6, 3513670), (10, 2108202), (12, 1756835), (15, 1405468), (19, 1109580), (20, 1054101), (30, 702734), (38, 554790), (57, 369860), (60, 351367), (76, 277395), (95, 221916), (114, 184930), (190, 110958), (228, 92465), (285, 73972), (380, 55479), (570, 36986), (1140, 18493)]