12846920

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{809}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 29014200

約数和(自身を除く): 16167280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 809, 1588, 1618, 1985, 3176, 3236, 3970, 4045, 6472, 7940, 8090, 15880, 16180, 32360, 321173, 642346, 1284692, 1605865, 2569384, 3211730, 6423460, 12846920]

約数ペア:

[(1, 12846920), (2, 6423460), (4, 3211730), (5, 2569384), (8, 1605865), (10, 1284692), (20, 642346), (40, 321173), (397, 32360), (794, 16180), (809, 15880), (1588, 8090), (1618, 7940), (1985, 6472), (3176, 4045), (3236, 3970)]