20945638

素因数分解:

$2^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1607}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 38592000

約数和(自身を除く): 17646362

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 343, 686, 931, 1607, 1862, 3214, 6517, 11249, 13034, 22498, 30533, 61066, 78743, 157486, 213731, 427462, 551201, 1102402, 1496117, 2992234, 10472819, 20945638]

約数ペア:

[(1, 20945638), (2, 10472819), (7, 2992234), (14, 1496117), (19, 1102402), (38, 551201), (49, 427462), (98, 213731), (133, 157486), (266, 78743), (343, 61066), (686, 30533), (931, 22498), (1607, 13034), (1862, 11249), (3214, 6517)]