20748494

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{433}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 35726880

約数和(自身を除く): 14978386

約数列:

[1, 2, 13, 19, 26, 38, 97, 194, 247, 433, 494, 866, 1261, 1843, 2522, 3686, 5629, 8227, 11258, 16454, 23959, 42001, 47918, 84002, 106951, 213902, 546013, 798019, 1092026, 1596038, 10374247, 20748494]

約数ペア:

[(1, 20748494), (2, 10374247), (13, 1596038), (19, 1092026), (26, 798019), (38, 546013), (97, 213902), (194, 106951), (247, 84002), (433, 47918), (494, 42001), (866, 23959), (1261, 16454), (1843, 11258), (2522, 8227), (3686, 5629)]