20578216

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{3659}}^1$

素因数の和:3721

約数の個数: 32

約数和(自身を含む): 41724000

約数和(自身を除く): 21145784

約数列:

[1, 2, 4, 8, 19, 37, 38, 74, 76, 148, 152, 296, 703, 1406, 2812, 3659, 5624, 7318, 14636, 29272, 69521, 135383, 139042, 270766, 278084, 541532, 556168, 1083064, 2572277, 5144554, 10289108, 20578216]

約数ペア:

[(1, 20578216), (2, 10289108), (4, 5144554), (8, 2572277), (19, 1083064), (37, 556168), (38, 541532), (74, 278084), (76, 270766), (148, 139042), (152, 135383), (296, 69521), (703, 29272), (1406, 14636), (2812, 7318), (3659, 5624)]