21350224

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 50790400

約数和(自身を除く): 29440176

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 79, 112, 127, 133, 152, 158, 254, 266, 304, 316, 508, 532, 553, 632, 889, 1016, 1064, 1106, 1264, 1501, 1778, 2032, 2128, 2212, 2413, 3002, 3556, 4424, 4826, 6004, 7112, 8848, 9652, 10033, 10507, 12008, 14224, 16891, 19304, 20066, 21014, 24016, 33782, 38608, 40132, 42028, 67564, 70231, 80264, 84056, 135128, 140462, 160528, 168112, 190627, 270256, 280924, 381254, 561848, 762508, 1123696, 1334389, 1525016, 2668778, 3050032, 5337556, 10675112, 21350224]

約数ペア:

[(1, 21350224), (2, 10675112), (4, 5337556), (7, 3050032), (8, 2668778), (14, 1525016), (16, 1334389), (19, 1123696), (28, 762508), (38, 561848), (56, 381254), (76, 280924), (79, 270256), (112, 190627), (127, 168112), (133, 160528), (152, 140462), (158, 135128), (254, 84056), (266, 80264), (304, 70231), (316, 67564), (508, 42028), (532, 40132), (553, 38608), (632, 33782), (889, 24016), (1016, 21014), (1064, 20066), (1106, 19304), (1264, 16891), (1501, 14224), (1778, 12008), (2032, 10507), (2128, 10033), (2212, 9652), (2413, 8848), (3002, 7112), (3556, 6004), (4424, 4826)]