21220948

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{353}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 45198720

約数和(自身を除く): 23977772

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 113, 133, 226, 266, 353, 452, 532, 706, 791, 1412, 1582, 2147, 2471, 3164, 4294, 4942, 6707, 8588, 9884, 13414, 15029, 26828, 30058, 39889, 46949, 60116, 79778, 93898, 159556, 187796, 279223, 558446, 757891, 1116892, 1515782, 3031564, 5305237, 10610474, 21220948]

約数ペア:

[(1, 21220948), (2, 10610474), (4, 5305237), (7, 3031564), (14, 1515782), (19, 1116892), (28, 757891), (38, 558446), (76, 279223), (113, 187796), (133, 159556), (226, 93898), (266, 79778), (353, 60116), (452, 46949), (532, 39889), (706, 30058), (791, 26828), (1412, 15029), (1582, 13414), (2147, 9884), (2471, 8588), (3164, 6707), (4294, 4942)]