19978542

素因数分解:

$2^1\times 3^3\times {\mathrm{89}}^1\times {\mathrm{4157}}^1$

素因数の和:4257

約数の個数: 32

約数和(自身を含む): 44906400

約数和(自身を除く): 24927858

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 89, 178, 267, 534, 801, 1602, 2403, 4157, 4806, 8314, 12471, 24942, 37413, 74826, 112239, 224478, 369973, 739946, 1109919, 2219838, 3329757, 6659514, 9989271, 19978542]

約数ペア:

[(1, 19978542), (2, 9989271), (3, 6659514), (6, 3329757), (9, 2219838), (18, 1109919), (27, 739946), (54, 369973), (89, 224478), (178, 112239), (267, 74826), (534, 37413), (801, 24942), (1602, 12471), (2403, 8314), (4157, 4806)]