20715244

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 21620756

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 71, 76, 142, 209, 284, 349, 418, 698, 781, 836, 1349, 1396, 1562, 2698, 3124, 3839, 5396, 6631, 7678, 13262, 14839, 15356, 24779, 26524, 29678, 49558, 59356, 72941, 99116, 145882, 272569, 291764, 470801, 545138, 941602, 1090276, 1883204, 5178811, 10357622, 20715244]

約数ペア:

[(1, 20715244), (2, 10357622), (4, 5178811), (11, 1883204), (19, 1090276), (22, 941602), (38, 545138), (44, 470801), (71, 291764), (76, 272569), (142, 145882), (209, 99116), (284, 72941), (349, 59356), (418, 49558), (698, 29678), (781, 26524), (836, 24779), (1349, 15356), (1396, 14839), (1562, 13262), (2698, 7678), (3124, 6631), (3839, 5396)]