28399005

素因数分解:

$3^4\times 5^1\times {\mathrm{70121}}^1$

素因数の和:70138

約数の個数: 20

約数和(自身を含む): 50908572

約数和(自身を除く): 22509567

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 70121, 210363, 350605, 631089, 1051815, 1893267, 3155445, 5679801, 9466335, 28399005]

約数ペア:

[(1, 28399005), (3, 9466335), (5, 5679801), (9, 3155445), (15, 1893267), (27, 1051815), (45, 631089), (81, 350605), (135, 210363), (405, 70121)]