21362840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28109}}^1$

素因数の和:28139

約数の個数: 32

約数和(自身を含む): 50598000

約数和(自身を除く): 29235160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28109, 56218, 112436, 140545, 224872, 281090, 534071, 562180, 1068142, 1124360, 2136284, 2670355, 4272568, 5340710, 10681420, 21362840]

約数ペア:

[(1, 21362840), (2, 10681420), (4, 5340710), (5, 4272568), (8, 2670355), (10, 2136284), (19, 1124360), (20, 1068142), (38, 562180), (40, 534071), (76, 281090), (95, 224872), (152, 140545), (190, 112436), (380, 56218), (760, 28109)]