21880278

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{823}}^1$

素因数の和:1049

約数の個数: 48

約数和(自身を含む): 54502656

約数和(自身を除く): 32622378

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 211, 422, 633, 823, 1266, 1477, 1646, 1899, 2469, 2954, 3798, 4431, 4938, 5761, 7407, 8862, 11522, 13293, 14814, 17283, 26586, 34566, 51849, 103698, 173653, 347306, 520959, 1041918, 1215571, 1562877, 2431142, 3125754, 3646713, 7293426, 10940139, 21880278]

約数ペア:

[(1, 21880278), (2, 10940139), (3, 7293426), (6, 3646713), (7, 3125754), (9, 2431142), (14, 1562877), (18, 1215571), (21, 1041918), (42, 520959), (63, 347306), (126, 173653), (211, 103698), (422, 51849), (633, 34566), (823, 26586), (1266, 17283), (1477, 14814), (1646, 13293), (1899, 11522), (2469, 8862), (2954, 7407), (3798, 5761), (4431, 4938)]