21308744

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{373}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 41356920

約数和(自身を除く): 20048176

約数列:

[1, 2, 4, 8, 37, 74, 148, 193, 296, 373, 386, 746, 772, 1492, 1544, 2984, 7141, 13801, 14282, 27602, 28564, 55204, 57128, 71989, 110408, 143978, 287956, 575912, 2663593, 5327186, 10654372, 21308744]

約数ペア:

[(1, 21308744), (2, 10654372), (4, 5327186), (8, 2663593), (37, 575912), (74, 287956), (148, 143978), (193, 110408), (296, 71989), (373, 57128), (386, 55204), (746, 28564), (772, 27602), (1492, 14282), (1544, 13801), (2984, 7141)]