28949240

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1823}}^1$

素因数の和:2231

約数の個数: 32

約数和(自身を含む): 65335680

約数和(自身を除く): 36386440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1823, 1985, 3176, 3646, 3970, 7292, 7940, 9115, 14584, 15880, 18230, 36460, 72920, 723731, 1447462, 2894924, 3618655, 5789848, 7237310, 14474620, 28949240]

約数ペア:

[(1, 28949240), (2, 14474620), (4, 7237310), (5, 5789848), (8, 3618655), (10, 2894924), (20, 1447462), (40, 723731), (397, 72920), (794, 36460), (1588, 18230), (1823, 15880), (1985, 14584), (3176, 9115), (3646, 7940), (3970, 7292)]