21995274

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{641}}^1$

素因数の和:715

約数の個数: 64

約数和(自身を含む): 54236160

約数和(自身を除く): 32240886

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 43, 57, 86, 114, 129, 133, 258, 266, 301, 399, 602, 641, 798, 817, 903, 1282, 1634, 1806, 1923, 2451, 3846, 4487, 4902, 5719, 8974, 11438, 12179, 13461, 17157, 24358, 26922, 27563, 34314, 36537, 55126, 73074, 82689, 85253, 165378, 170506, 192941, 255759, 385882, 511518, 523697, 578823, 1047394, 1157646, 1571091, 3142182, 3665879, 7331758, 10997637, 21995274]

約数ペア:

[(1, 21995274), (2, 10997637), (3, 7331758), (6, 3665879), (7, 3142182), (14, 1571091), (19, 1157646), (21, 1047394), (38, 578823), (42, 523697), (43, 511518), (57, 385882), (86, 255759), (114, 192941), (129, 170506), (133, 165378), (258, 85253), (266, 82689), (301, 73074), (399, 55126), (602, 36537), (641, 34314), (798, 27563), (817, 26922), (903, 24358), (1282, 17157), (1634, 13461), (1806, 12179), (1923, 11438), (2451, 8974), (3846, 5719), (4487, 4902)]