20470990

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{907}}^1$

素因数の和:1012

約数の個数: 32

約数和(自身を含む): 38506464

約数和(自身を除く): 18035474

約数列:

[1, 2, 5, 10, 37, 61, 74, 122, 185, 305, 370, 610, 907, 1814, 2257, 4514, 4535, 9070, 11285, 22570, 33559, 55327, 67118, 110654, 167795, 276635, 335590, 553270, 2047099, 4094198, 10235495, 20470990]

約数ペア:

[(1, 20470990), (2, 10235495), (5, 4094198), (10, 2047099), (37, 553270), (61, 335590), (74, 276635), (122, 167795), (185, 110654), (305, 67118), (370, 55327), (610, 33559), (907, 22570), (1814, 11285), (2257, 9070), (4514, 4535)]