21812037

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{197}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 33530112

約数和(自身を除く): 11718075

約数列:

[1, 3, 13, 17, 39, 51, 167, 197, 221, 501, 591, 663, 2171, 2561, 2839, 3349, 6513, 7683, 8517, 10047, 32899, 36907, 43537, 98697, 110721, 130611, 427687, 559283, 1283061, 1677849, 7270679, 21812037]

約数ペア:

[(1, 21812037), (3, 7270679), (13, 1677849), (17, 1283061), (39, 559283), (51, 427687), (167, 130611), (197, 110721), (221, 98697), (501, 43537), (591, 36907), (663, 32899), (2171, 10047), (2561, 8517), (2839, 7683), (3349, 6513)]