21161888

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{761}}^1$

素因数の和:861

約数の個数: 48

約数和(自身を含む): 46085760

約数和(自身を除く): 24923872

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 79, 88, 158, 176, 316, 352, 632, 761, 869, 1264, 1522, 1738, 2528, 3044, 3476, 6088, 6952, 8371, 12176, 13904, 16742, 24352, 27808, 33484, 60119, 66968, 120238, 133936, 240476, 267872, 480952, 661309, 961904, 1322618, 1923808, 2645236, 5290472, 10580944, 21161888]

約数ペア:

[(1, 21161888), (2, 10580944), (4, 5290472), (8, 2645236), (11, 1923808), (16, 1322618), (22, 961904), (32, 661309), (44, 480952), (79, 267872), (88, 240476), (158, 133936), (176, 120238), (316, 66968), (352, 60119), (632, 33484), (761, 27808), (869, 24352), (1264, 16742), (1522, 13904), (1738, 12176), (2528, 8371), (3044, 6952), (3476, 6088)]