21995248

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2659}}^1$

素因数の和:2725

約数の個数: 40

約数和(自身を含む): 47496960

約数和(自身を除く): 25501712

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 88, 94, 176, 188, 376, 517, 752, 1034, 2068, 2659, 4136, 5318, 8272, 10636, 21272, 29249, 42544, 58498, 116996, 124973, 233992, 249946, 467984, 499892, 999784, 1374703, 1999568, 2749406, 5498812, 10997624, 21995248]

約数ペア:

[(1, 21995248), (2, 10997624), (4, 5498812), (8, 2749406), (11, 1999568), (16, 1374703), (22, 999784), (44, 499892), (47, 467984), (88, 249946), (94, 233992), (176, 124973), (188, 116996), (376, 58498), (517, 42544), (752, 29249), (1034, 21272), (2068, 10636), (2659, 8272), (4136, 5318)]