19885695

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 32807424

約数和(自身を除く): 12921729

約数列:

[1, 3, 5, 15, 61, 103, 183, 211, 305, 309, 515, 633, 915, 1055, 1545, 3165, 6283, 12871, 18849, 21733, 31415, 38613, 64355, 65199, 94245, 108665, 193065, 325995, 1325713, 3977139, 6628565, 19885695]

約数ペア:

[(1, 19885695), (3, 6628565), (5, 3977139), (15, 1325713), (61, 325995), (103, 193065), (183, 108665), (211, 94245), (305, 65199), (309, 64355), (515, 38613), (633, 31415), (915, 21733), (1055, 18849), (1545, 12871), (3165, 6283)]