20313964

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^2$

素因数の和:139

約数の個数: 54

約数和(自身を含む): 42025340

約数和(自身を除く): 21711376

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 47, 76, 94, 121, 188, 209, 242, 418, 484, 517, 836, 893, 1034, 1786, 2068, 2209, 2299, 3572, 4418, 4598, 5687, 8836, 9196, 9823, 11374, 19646, 22748, 24299, 39292, 41971, 48598, 83942, 97196, 108053, 167884, 216106, 267289, 432212, 461681, 534578, 923362, 1069156, 1846724, 5078491, 10156982, 20313964]

約数ペア:

[(1, 20313964), (2, 10156982), (4, 5078491), (11, 1846724), (19, 1069156), (22, 923362), (38, 534578), (44, 461681), (47, 432212), (76, 267289), (94, 216106), (121, 167884), (188, 108053), (209, 97196), (242, 83942), (418, 48598), (484, 41971), (517, 39292), (836, 24299), (893, 22748), (1034, 19646), (1786, 11374), (2068, 9823), (2209, 9196), (2299, 8836), (3572, 5687), (4418, 4598)]