20821719

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{3613}}^1$

素因数の和:3746

約数の個数: 16

約数和(自身を含む): 29663712

約数和(自身を除く): 8841993

約数列:

[1, 3, 17, 51, 113, 339, 1921, 3613, 5763, 10839, 61421, 184263, 408269, 1224807, 6940573, 20821719]

約数ペア:

[(1, 20821719), (3, 6940573), (17, 1224807), (51, 408269), (113, 184263), (339, 61421), (1921, 10839), (3613, 5763)]