21499450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:152

約数の個数: 96

約数和(自身を含む): 49818240

約数和(自身を除く): 28318790

約数列:

[1, 2, 5, 7, 10, 14, 19, 25, 35, 38, 50, 53, 61, 70, 95, 106, 122, 133, 175, 190, 265, 266, 305, 350, 371, 427, 475, 530, 610, 665, 742, 854, 950, 1007, 1159, 1325, 1330, 1525, 1855, 2014, 2135, 2318, 2650, 3050, 3233, 3325, 3710, 4270, 5035, 5795, 6466, 6650, 7049, 8113, 9275, 10070, 10675, 11590, 14098, 16165, 16226, 18550, 21350, 22631, 25175, 28975, 32330, 35245, 40565, 45262, 50350, 57950, 61427, 70490, 80825, 81130, 113155, 122854, 161650, 176225, 202825, 226310, 307135, 352450, 405650, 429989, 565775, 614270, 859978, 1131550, 1535675, 2149945, 3071350, 4299890, 10749725, 21499450]

約数ペア:

[(1, 21499450), (2, 10749725), (5, 4299890), (7, 3071350), (10, 2149945), (14, 1535675), (19, 1131550), (25, 859978), (35, 614270), (38, 565775), (50, 429989), (53, 405650), (61, 352450), (70, 307135), (95, 226310), (106, 202825), (122, 176225), (133, 161650), (175, 122854), (190, 113155), (265, 81130), (266, 80825), (305, 70490), (350, 61427), (371, 57950), (427, 50350), (475, 45262), (530, 40565), (610, 35245), (665, 32330), (742, 28975), (854, 25175), (950, 22631), (1007, 21350), (1159, 18550), (1325, 16226), (1330, 16165), (1525, 14098), (1855, 11590), (2014, 10675), (2135, 10070), (2318, 9275), (2650, 8113), (3050, 7049), (3233, 6650), (3325, 6466), (3710, 5795), (4270, 5035)]