21039065

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{373}}^1\times {\mathrm{389}}^1$

素因数の和:796

約数の個数: 16

約数和(自身を含む): 26254800

約数和(自身を除く): 5215735

約数列:

[1, 5, 29, 145, 373, 389, 1865, 1945, 10817, 11281, 54085, 56405, 145097, 725485, 4207813, 21039065]

約数ペア:

[(1, 21039065), (5, 4207813), (29, 725485), (145, 145097), (373, 56405), (389, 54085), (1865, 11281), (1945, 10817)]