21182416

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1181}}^1$

素因数の和:1267

約数の個数: 40

約数和(自身を含む): 43970400

約数和(自身を除く): 22787984

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 118, 152, 236, 304, 472, 944, 1121, 1181, 2242, 2362, 4484, 4724, 8968, 9448, 17936, 18896, 22439, 44878, 69679, 89756, 139358, 179512, 278716, 359024, 557432, 1114864, 1323901, 2647802, 5295604, 10591208, 21182416]

約数ペア:

[(1, 21182416), (2, 10591208), (4, 5295604), (8, 2647802), (16, 1323901), (19, 1114864), (38, 557432), (59, 359024), (76, 278716), (118, 179512), (152, 139358), (236, 89756), (304, 69679), (472, 44878), (944, 22439), (1121, 18896), (1181, 17936), (2242, 9448), (2362, 8968), (4484, 4724)]