19509957

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:474

約数の個数: 32

約数和(自身を含む): 30585600

約数和(自身を除く): 11075643

約数列:

[1, 3, 9, 23, 27, 69, 89, 207, 267, 353, 621, 801, 1059, 2047, 2403, 3177, 6141, 8119, 9531, 18423, 24357, 31417, 55269, 73071, 94251, 219213, 282753, 722591, 848259, 2167773, 6503319, 19509957]

約数ペア:

[(1, 19509957), (3, 6503319), (9, 2167773), (23, 848259), (27, 722591), (69, 282753), (89, 219213), (207, 94251), (267, 73071), (353, 55269), (621, 31417), (801, 24357), (1059, 18423), (2047, 9531), (2403, 8119), (3177, 6141)]