21625065

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^2$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 47331648

約数和(自身を除く): 25706583

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 79, 99, 105, 165, 231, 237, 315, 385, 395, 495, 553, 693, 711, 869, 1155, 1185, 1659, 2607, 2765, 3465, 3555, 4345, 4977, 6083, 6241, 7821, 8295, 13035, 18249, 18723, 24885, 30415, 31205, 39105, 43687, 54747, 56169, 68651, 91245, 93615, 131061, 205953, 218435, 273735, 280845, 343255, 393183, 480557, 617859, 655305, 1029765, 1441671, 1965915, 2402785, 3089295, 4325013, 7208355, 21625065]

約数ペア:

[(1, 21625065), (3, 7208355), (5, 4325013), (7, 3089295), (9, 2402785), (11, 1965915), (15, 1441671), (21, 1029765), (33, 655305), (35, 617859), (45, 480557), (55, 393183), (63, 343255), (77, 280845), (79, 273735), (99, 218435), (105, 205953), (165, 131061), (231, 93615), (237, 91245), (315, 68651), (385, 56169), (395, 54747), (495, 43687), (553, 39105), (693, 31205), (711, 30415), (869, 24885), (1155, 18723), (1185, 18249), (1659, 13035), (2607, 8295), (2765, 7821), (3465, 6241), (3555, 6083), (4345, 4977)]