20428506

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{823}}^1$

素因数の和:1035

約数の個数: 48

約数和(自身を含む): 50903424

約数和(自身を除く): 30474918

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 197, 394, 591, 823, 1182, 1379, 1646, 1773, 2469, 2758, 3546, 4137, 4938, 5761, 7407, 8274, 11522, 12411, 14814, 17283, 24822, 34566, 51849, 103698, 162131, 324262, 486393, 972786, 1134917, 1459179, 2269834, 2918358, 3404751, 6809502, 10214253, 20428506]

約数ペア:

[(1, 20428506), (2, 10214253), (3, 6809502), (6, 3404751), (7, 2918358), (9, 2269834), (14, 1459179), (18, 1134917), (21, 972786), (42, 486393), (63, 324262), (126, 162131), (197, 103698), (394, 51849), (591, 34566), (823, 24822), (1182, 17283), (1379, 14814), (1646, 12411), (1773, 11522), (2469, 8274), (2758, 7407), (3546, 5761), (4137, 4938)]