20021840

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2339}}^1$

素因数の和:2459

約数の個数: 40

約数和(自身を含む): 47005920

約数和(自身を除く): 26984080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2339, 4280, 4678, 8560, 9356, 11695, 18712, 23390, 37424, 46780, 93560, 187120, 250273, 500546, 1001092, 1251365, 2002184, 2502730, 4004368, 5005460, 10010920, 20021840]

約数ペア:

[(1, 20021840), (2, 10010920), (4, 5005460), (5, 4004368), (8, 2502730), (10, 2002184), (16, 1251365), (20, 1001092), (40, 500546), (80, 250273), (107, 187120), (214, 93560), (428, 46780), (535, 37424), (856, 23390), (1070, 18712), (1712, 11695), (2140, 9356), (2339, 8560), (4280, 4678)]