128794180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1\times {\mathrm{461}}^1$

素因数の和:760

約数の個数: 48

約数和(自身を含む): 276701040

約数和(自身を除く): 147906860

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 229, 244, 305, 458, 461, 610, 916, 922, 1145, 1220, 1844, 2290, 2305, 4580, 4610, 9220, 13969, 27938, 28121, 55876, 56242, 69845, 105569, 112484, 139690, 140605, 211138, 279380, 281210, 422276, 527845, 562420, 1055690, 2111380, 6439709, 12879418, 25758836, 32198545, 64397090, 128794180]

約数ペア:

[(1, 128794180), (2, 64397090), (4, 32198545), (5, 25758836), (10, 12879418), (20, 6439709), (61, 2111380), (122, 1055690), (229, 562420), (244, 527845), (305, 422276), (458, 281210), (461, 279380), (610, 211138), (916, 140605), (922, 139690), (1145, 112484), (1220, 105569), (1844, 69845), (2290, 56242), (2305, 55876), (4580, 28121), (4610, 27938), (9220, 13969)]