21278958

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1\times {\mathrm{491}}^1$

素因数の和:760

約数の個数: 32

約数和(自身を含む): 44209152

約数和(自身を除く): 22930194

約数列:

[1, 2, 3, 6, 31, 62, 93, 186, 233, 466, 491, 699, 982, 1398, 1473, 2946, 7223, 14446, 15221, 21669, 30442, 43338, 45663, 91326, 114403, 228806, 343209, 686418, 3546493, 7092986, 10639479, 21278958]

約数ペア:

[(1, 21278958), (2, 10639479), (3, 7092986), (6, 3546493), (31, 686418), (62, 343209), (93, 228806), (186, 114403), (233, 91326), (466, 45663), (491, 43338), (699, 30442), (982, 21669), (1398, 15221), (1473, 14446), (2946, 7223)]