21704852

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 44396352

約数和(自身を除く): 22691500

約数列:

[1, 2, 4, 13, 17, 26, 34, 43, 52, 68, 86, 172, 221, 442, 559, 571, 731, 884, 1118, 1142, 1462, 2236, 2284, 2924, 7423, 9503, 9707, 14846, 19006, 19414, 24553, 29692, 38012, 38828, 49106, 98212, 126191, 252382, 319189, 417401, 504764, 638378, 834802, 1276756, 1669604, 5426213, 10852426, 21704852]

約数ペア:

[(1, 21704852), (2, 10852426), (4, 5426213), (13, 1669604), (17, 1276756), (26, 834802), (34, 638378), (43, 504764), (52, 417401), (68, 319189), (86, 252382), (172, 126191), (221, 98212), (442, 49106), (559, 38828), (571, 38012), (731, 29692), (884, 24553), (1118, 19414), (1142, 19006), (1462, 14846), (2236, 9707), (2284, 9503), (2924, 7423)]