21447071457

素因数分解:

$3^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{643}}^1\times {\mathrm{6997}}^1$

素因数の和:7877

約数の個数: 32

約数和(自身を含む): 32880970752

約数和(自身を除く): 11433899295

約数列:

[1, 3, 7, 21, 227, 643, 681, 1589, 1929, 4501, 4767, 6997, 13503, 20991, 48979, 145961, 146937, 437883, 1021727, 1588319, 3065181, 4499071, 4764957, 11118233, 13497213, 31493497, 33354699, 94480491, 1021289117, 3063867351, 7149023819, 21447071457]

約数ペア:

[(1, 21447071457), (3, 7149023819), (7, 3063867351), (21, 1021289117), (227, 94480491), (643, 33354699), (681, 31493497), (1589, 13497213), (1929, 11118233), (4501, 4764957), (4767, 4499071), (6997, 3065181), (13503, 1588319), (20991, 1021727), (48979, 437883), (145961, 146937)]