291217840

素因数分解:

$2^4\times 5^1\times {\mathrm{3640223}}^1$

素因数の和:3640236

約数の個数: 20

約数和(自身を含む): 677081664

約数和(自身を除く): 385863824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3640223, 7280446, 14560892, 18201115, 29121784, 36402230, 58243568, 72804460, 145608920, 291217840]

約数ペア:

[(1, 291217840), (2, 145608920), (4, 72804460), (5, 58243568), (8, 36402230), (10, 29121784), (16, 18201115), (20, 14560892), (40, 7280446), (80, 3640223)]