311918920

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{12721}}^1$

素因数の和:13345

約数の個数: 32

約数和(自身を含む): 703017720

約数和(自身を除く): 391098800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 1226, 2452, 3065, 4904, 6130, 12260, 12721, 24520, 25442, 50884, 63605, 101768, 127210, 254420, 508840, 7797973, 15595946, 31191892, 38989865, 62383784, 77979730, 155959460, 311918920]

約数ペア:

[(1, 311918920), (2, 155959460), (4, 77979730), (5, 62383784), (8, 38989865), (10, 31191892), (20, 15595946), (40, 7797973), (613, 508840), (1226, 254420), (2452, 127210), (3065, 101768), (4904, 63605), (6130, 50884), (12260, 25442), (12721, 24520)]