289318720

素因数分解:

$2^6\times 5^1\times {\mathrm{904121}}^1$

素因数の和:904138

約数の個数: 28

約数和(自身を含む): 688940964

約数和(自身を除く): 399622244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 904121, 1808242, 3616484, 4520605, 7232968, 9041210, 14465936, 18082420, 28931872, 36164840, 57863744, 72329680, 144659360, 289318720]

約数ペア:

[(1, 289318720), (2, 144659360), (4, 72329680), (5, 57863744), (8, 36164840), (10, 28931872), (16, 18082420), (20, 14465936), (32, 9041210), (40, 7232968), (64, 4520605), (80, 3616484), (160, 1808242), (320, 904121)]