20602505

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{907}}^1$

素因数の和:989

約数の個数: 32

約数和(自身を含む): 31380480

約数和(自身を除く): 10777975

約数列:

[1, 5, 7, 11, 35, 55, 59, 77, 295, 385, 413, 649, 907, 2065, 3245, 4535, 4543, 6349, 9977, 22715, 31745, 49885, 53513, 69839, 267565, 349195, 374591, 588643, 1872955, 2943215, 4120501, 20602505]

約数ペア:

[(1, 20602505), (5, 4120501), (7, 2943215), (11, 1872955), (35, 588643), (55, 374591), (59, 349195), (77, 267565), (295, 69839), (385, 53513), (413, 49885), (649, 31745), (907, 22715), (2065, 9977), (3245, 6349), (4535, 4543)]