21346528

素因数分解:

$2^5\times 7^1\times {\mathrm{233}}^1\times {\mathrm{409}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 48353760

約数和(自身を除く): 27007232

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 233, 409, 466, 818, 932, 1631, 1636, 1864, 2863, 3262, 3272, 3728, 5726, 6524, 6544, 7456, 11452, 13048, 13088, 22904, 26096, 45808, 52192, 91616, 95297, 190594, 381188, 667079, 762376, 1334158, 1524752, 2668316, 3049504, 5336632, 10673264, 21346528]

約数ペア:

[(1, 21346528), (2, 10673264), (4, 5336632), (7, 3049504), (8, 2668316), (14, 1524752), (16, 1334158), (28, 762376), (32, 667079), (56, 381188), (112, 190594), (224, 95297), (233, 91616), (409, 52192), (466, 45808), (818, 26096), (932, 22904), (1631, 13088), (1636, 13048), (1864, 11452), (2863, 7456), (3262, 6544), (3272, 6524), (3728, 5726)]