21560238

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1249}}^1$

素因数の和:1401

約数の個数: 48

約数和(自身を含む): 53820000

約数和(自身を除く): 32259762

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 137, 274, 411, 822, 959, 1233, 1249, 1918, 2466, 2498, 2877, 3747, 5754, 7494, 8631, 8743, 11241, 17262, 17486, 22482, 26229, 52458, 78687, 157374, 171113, 342226, 513339, 1026678, 1197791, 1540017, 2395582, 3080034, 3593373, 7186746, 10780119, 21560238]

約数ペア:

[(1, 21560238), (2, 10780119), (3, 7186746), (6, 3593373), (7, 3080034), (9, 2395582), (14, 1540017), (18, 1197791), (21, 1026678), (42, 513339), (63, 342226), (126, 171113), (137, 157374), (274, 78687), (411, 52458), (822, 26229), (959, 22482), (1233, 17486), (1249, 17262), (1918, 11241), (2466, 8743), (2498, 8631), (2877, 7494), (3747, 5754)]