20693865

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 13520535

約数列:

[1, 3, 5, 15, 47, 141, 149, 197, 235, 447, 591, 705, 745, 985, 2235, 2955, 7003, 9259, 21009, 27777, 29353, 35015, 46295, 88059, 105045, 138885, 146765, 440295, 1379591, 4138773, 6897955, 20693865]

約数ペア:

[(1, 20693865), (3, 6897955), (5, 4138773), (15, 1379591), (47, 440295), (141, 146765), (149, 138885), (197, 105045), (235, 88059), (447, 46295), (591, 35015), (705, 29353), (745, 27777), (985, 21009), (2235, 9259), (2955, 7003)]