21254716

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 44900352

約数和(自身を除く): 23645636

約数列:

[1, 2, 4, 7, 14, 28, 31, 47, 62, 94, 124, 188, 217, 329, 434, 521, 658, 868, 1042, 1316, 1457, 2084, 2914, 3647, 5828, 7294, 10199, 14588, 16151, 20398, 24487, 32302, 40796, 48974, 64604, 97948, 113057, 171409, 226114, 342818, 452228, 685636, 759097, 1518194, 3036388, 5313679, 10627358, 21254716]

約数ペア:

[(1, 21254716), (2, 10627358), (4, 5313679), (7, 3036388), (14, 1518194), (28, 759097), (31, 685636), (47, 452228), (62, 342818), (94, 226114), (124, 171409), (188, 113057), (217, 97948), (329, 64604), (434, 48974), (521, 40796), (658, 32302), (868, 24487), (1042, 20398), (1316, 16151), (1457, 14588), (2084, 10199), (2914, 7294), (3647, 5828)]