399389620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{499}}^1\times {\mathrm{5717}}^1$

素因数の和:6232

約数の個数: 48

約数和(自身を含む): 960624000

約数和(自身を除く): 561234380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 499, 998, 1996, 2495, 3493, 4990, 5717, 6986, 9980, 11434, 13972, 17465, 22868, 28585, 34930, 40019, 57170, 69860, 80038, 114340, 160076, 200095, 400190, 800380, 2852783, 5705566, 11411132, 14263915, 19969481, 28527830, 39938962, 57055660, 79877924, 99847405, 199694810, 399389620]

約数ペア:

[(1, 399389620), (2, 199694810), (4, 99847405), (5, 79877924), (7, 57055660), (10, 39938962), (14, 28527830), (20, 19969481), (28, 14263915), (35, 11411132), (70, 5705566), (140, 2852783), (499, 800380), (998, 400190), (1996, 200095), (2495, 160076), (3493, 114340), (4990, 80038), (5717, 69860), (6986, 57170), (9980, 40019), (11434, 34930), (13972, 28585), (17465, 22868)]