20422900

素因数分解:

$2^2\times 5^2\times {\mathrm{131}}^1\times {\mathrm{1559}}^1$

素因数の和:1704

約数の個数: 36

約数和(自身を含む): 44684640

約数和(自身を除く): 24261740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 131, 262, 524, 655, 1310, 1559, 2620, 3118, 3275, 6236, 6550, 7795, 13100, 15590, 31180, 38975, 77950, 155900, 204229, 408458, 816916, 1021145, 2042290, 4084580, 5105725, 10211450, 20422900]

約数ペア:

[(1, 20422900), (2, 10211450), (4, 5105725), (5, 4084580), (10, 2042290), (20, 1021145), (25, 816916), (50, 408458), (100, 204229), (131, 155900), (262, 77950), (524, 38975), (655, 31180), (1310, 15590), (1559, 13100), (2620, 7795), (3118, 6550), (3275, 6236)]