21882028

素因数分解:

$2^2\times 7^3\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:455

約数の個数: 48

約数和(自身を含む): 45864000

約数和(自身を除く): 23981972

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 343, 389, 574, 686, 778, 1148, 1372, 1556, 2009, 2723, 4018, 5446, 8036, 10892, 14063, 15949, 19061, 28126, 31898, 38122, 56252, 63796, 76244, 111643, 133427, 223286, 266854, 446572, 533708, 781501, 1563002, 3126004, 5470507, 10941014, 21882028]

約数ペア:

[(1, 21882028), (2, 10941014), (4, 5470507), (7, 3126004), (14, 1563002), (28, 781501), (41, 533708), (49, 446572), (82, 266854), (98, 223286), (164, 133427), (196, 111643), (287, 76244), (343, 63796), (389, 56252), (574, 38122), (686, 31898), (778, 28126), (1148, 19061), (1372, 15949), (1556, 14063), (2009, 10892), (2723, 8036), (4018, 5446)]