21214998

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1229}}^1$

素因数の和:1381

約数の個数: 48

約数和(自身を含む): 52958880

約数和(自身を除く): 31743882

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 137, 274, 411, 822, 959, 1229, 1233, 1918, 2458, 2466, 2877, 3687, 5754, 7374, 8603, 8631, 11061, 17206, 17262, 22122, 25809, 51618, 77427, 154854, 168373, 336746, 505119, 1010238, 1178611, 1515357, 2357222, 3030714, 3535833, 7071666, 10607499, 21214998]

約数ペア:

[(1, 21214998), (2, 10607499), (3, 7071666), (6, 3535833), (7, 3030714), (9, 2357222), (14, 1515357), (18, 1178611), (21, 1010238), (42, 505119), (63, 336746), (126, 168373), (137, 154854), (274, 77427), (411, 51618), (822, 25809), (959, 22122), (1229, 17262), (1233, 17206), (1918, 11061), (2458, 8631), (2466, 8603), (2877, 7374), (3687, 5754)]