20995455

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1607}}^1$

素因数の和:1695

約数の個数: 32

約数和(自身を含む): 36739584

約数和(自身を除く): 15744129

約数列:

[1, 3, 5, 13, 15, 39, 65, 67, 195, 201, 335, 871, 1005, 1607, 2613, 4355, 4821, 8035, 13065, 20891, 24105, 62673, 104455, 107669, 313365, 323007, 538345, 1399697, 1615035, 4199091, 6998485, 20995455]

約数ペア:

[(1, 20995455), (3, 6998485), (5, 4199091), (13, 1615035), (15, 1399697), (39, 538345), (65, 323007), (67, 313365), (195, 107669), (201, 104455), (335, 62673), (871, 24105), (1005, 20891), (1607, 13065), (2613, 8035), (4355, 4821)]