25421140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{311}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 55246464

約数和(自身を除く): 29825324

約数列:

[1, 2, 4, 5, 10, 20, 61, 67, 122, 134, 244, 268, 305, 311, 335, 610, 622, 670, 1220, 1244, 1340, 1555, 3110, 4087, 6220, 8174, 16348, 18971, 20435, 20837, 37942, 40870, 41674, 75884, 81740, 83348, 94855, 104185, 189710, 208370, 379420, 416740, 1271057, 2542114, 5084228, 6355285, 12710570, 25421140]

約数ペア:

[(1, 25421140), (2, 12710570), (4, 6355285), (5, 5084228), (10, 2542114), (20, 1271057), (61, 416740), (67, 379420), (122, 208370), (134, 189710), (244, 104185), (268, 94855), (305, 83348), (311, 81740), (335, 75884), (610, 41674), (622, 40870), (670, 37942), (1220, 20837), (1244, 20435), (1340, 18971), (1555, 16348), (3110, 8174), (4087, 6220)]