20081645

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 26763264

約数和(自身を除く): 6681619

約数列:

[1, 5, 23, 31, 43, 115, 131, 155, 215, 655, 713, 989, 1333, 3013, 3565, 4061, 4945, 5633, 6665, 15065, 20305, 28165, 30659, 93403, 129559, 153295, 174623, 467015, 647795, 873115, 4016329, 20081645]

約数ペア:

[(1, 20081645), (5, 4016329), (23, 873115), (31, 647795), (43, 467015), (115, 174623), (131, 153295), (155, 129559), (215, 93403), (655, 30659), (713, 28165), (989, 20305), (1333, 15065), (3013, 6665), (3565, 5633), (4061, 4945)]