21775985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{347}}^1$

素因数の和:533

約数の個数: 32

約数和(自身を含む): 32873472

約数和(自身を除く): 11097487

約数列:

[1, 5, 7, 11, 35, 55, 77, 163, 347, 385, 815, 1141, 1735, 1793, 2429, 3817, 5705, 8965, 12145, 12551, 19085, 26719, 56561, 62755, 133595, 282805, 395927, 622171, 1979635, 3110855, 4355197, 21775985]

約数ペア:

[(1, 21775985), (5, 4355197), (7, 3110855), (11, 1979635), (35, 622171), (55, 395927), (77, 282805), (163, 133595), (347, 62755), (385, 56561), (815, 26719), (1141, 19085), (1735, 12551), (1793, 12145), (2429, 8965), (3817, 5705)]