18742520

素因数分解:

$2^3\times 5^1\times {\mathrm{233}}^1\times {\mathrm{2011}}^1$

素因数の和:2255

約数の個数: 32

約数和(自身を含む): 42372720

約数和(自身を除く): 23630200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 233, 466, 932, 1165, 1864, 2011, 2330, 4022, 4660, 8044, 9320, 10055, 16088, 20110, 40220, 80440, 468563, 937126, 1874252, 2342815, 3748504, 4685630, 9371260, 18742520]

約数ペア:

[(1, 18742520), (2, 9371260), (4, 4685630), (5, 3748504), (8, 2342815), (10, 1874252), (20, 937126), (40, 468563), (233, 80440), (466, 40220), (932, 20110), (1165, 16088), (1864, 10055), (2011, 9320), (2330, 8044), (4022, 4660)]