21587935

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:199

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 6797345

約数列:

[1, 5, 31, 41, 43, 79, 155, 205, 215, 395, 1271, 1333, 1763, 2449, 3239, 3397, 6355, 6665, 8815, 12245, 16195, 16985, 54653, 100409, 105307, 139277, 273265, 502045, 526535, 696385, 4317587, 21587935]

約数ペア:

[(1, 21587935), (5, 4317587), (31, 696385), (41, 526535), (43, 502045), (79, 273265), (155, 139277), (205, 105307), (215, 100409), (395, 54653), (1271, 16985), (1333, 16195), (1763, 12245), (2449, 8815), (3239, 6665), (3397, 6355)]