20147025

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 35265600

約数和(自身を除く): 15118575

約数列:

[1, 3, 5, 15, 25, 29, 59, 75, 87, 145, 157, 177, 295, 435, 471, 725, 785, 885, 1475, 1711, 2175, 2355, 3925, 4425, 4553, 5133, 8555, 9263, 11775, 13659, 22765, 25665, 27789, 42775, 46315, 68295, 113825, 128325, 138945, 231575, 268627, 341475, 694725, 805881, 1343135, 4029405, 6715675, 20147025]

約数ペア:

[(1, 20147025), (3, 6715675), (5, 4029405), (15, 1343135), (25, 805881), (29, 694725), (59, 341475), (75, 268627), (87, 231575), (145, 138945), (157, 128325), (177, 113825), (295, 68295), (435, 46315), (471, 42775), (725, 27789), (785, 25665), (885, 22765), (1475, 13659), (1711, 11775), (2175, 9263), (2355, 8555), (3925, 5133), (4425, 4553)]