21411555

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 38610432

約数和(自身を除く): 17198877

約数列:

[1, 3, 5, 11, 15, 33, 47, 55, 121, 141, 165, 235, 251, 363, 517, 605, 705, 753, 1255, 1551, 1815, 2585, 2761, 3765, 5687, 7755, 8283, 11797, 13805, 17061, 28435, 30371, 35391, 41415, 58985, 85305, 91113, 129767, 151855, 176955, 389301, 455565, 648835, 1427437, 1946505, 4282311, 7137185, 21411555]

約数ペア:

[(1, 21411555), (3, 7137185), (5, 4282311), (11, 1946505), (15, 1427437), (33, 648835), (47, 455565), (55, 389301), (121, 176955), (141, 151855), (165, 129767), (235, 91113), (251, 85305), (363, 58985), (517, 41415), (605, 35391), (705, 30371), (753, 28435), (1255, 17061), (1551, 13805), (1815, 11797), (2585, 8283), (2761, 7755), (3765, 5687)]