21380450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:196

約数の個数: 96

約数和(自身を含む): 50663424

約数和(自身を除く): 29282974

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 37, 50, 65, 70, 74, 91, 127, 130, 175, 182, 185, 254, 259, 325, 350, 370, 455, 481, 518, 635, 650, 889, 910, 925, 962, 1270, 1295, 1651, 1778, 1850, 2275, 2405, 2590, 3175, 3302, 3367, 4445, 4550, 4699, 4810, 6350, 6475, 6734, 8255, 8890, 9398, 11557, 12025, 12950, 16510, 16835, 22225, 23114, 23495, 24050, 32893, 33670, 41275, 44450, 46990, 57785, 61087, 65786, 82550, 84175, 115570, 117475, 122174, 164465, 168350, 234950, 288925, 305435, 328930, 427609, 577850, 610870, 822325, 855218, 1527175, 1644650, 2138045, 3054350, 4276090, 10690225, 21380450]

約数ペア:

[(1, 21380450), (2, 10690225), (5, 4276090), (7, 3054350), (10, 2138045), (13, 1644650), (14, 1527175), (25, 855218), (26, 822325), (35, 610870), (37, 577850), (50, 427609), (65, 328930), (70, 305435), (74, 288925), (91, 234950), (127, 168350), (130, 164465), (175, 122174), (182, 117475), (185, 115570), (254, 84175), (259, 82550), (325, 65786), (350, 61087), (370, 57785), (455, 46990), (481, 44450), (518, 41275), (635, 33670), (650, 32893), (889, 24050), (910, 23495), (925, 23114), (962, 22225), (1270, 16835), (1295, 16510), (1651, 12950), (1778, 12025), (1850, 11557), (2275, 9398), (2405, 8890), (2590, 8255), (3175, 6734), (3302, 6475), (3367, 6350), (4445, 4810), (4550, 4699)]