18880792

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 42923520

約数和(自身を除く): 24042728

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 107, 137, 161, 184, 214, 274, 322, 428, 548, 644, 749, 856, 959, 1096, 1288, 1498, 1918, 2461, 2996, 3151, 3836, 4922, 5992, 6302, 7672, 9844, 12604, 14659, 17227, 19688, 22057, 25208, 29318, 34454, 44114, 58636, 68908, 88228, 102613, 117272, 137816, 176456, 205226, 337157, 410452, 674314, 820904, 1348628, 2360099, 2697256, 4720198, 9440396, 18880792]

約数ペア:

[(1, 18880792), (2, 9440396), (4, 4720198), (7, 2697256), (8, 2360099), (14, 1348628), (23, 820904), (28, 674314), (46, 410452), (56, 337157), (92, 205226), (107, 176456), (137, 137816), (161, 117272), (184, 102613), (214, 88228), (274, 68908), (322, 58636), (428, 44114), (548, 34454), (644, 29318), (749, 25208), (856, 22057), (959, 19688), (1096, 17227), (1288, 14659), (1498, 12604), (1918, 9844), (2461, 7672), (2996, 6302), (3151, 5992), (3836, 4922)]