19948345

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 26256384

約数和(自身を除く): 6308039

約数列:

[1, 5, 31, 41, 43, 73, 155, 205, 215, 365, 1271, 1333, 1763, 2263, 2993, 3139, 6355, 6665, 8815, 11315, 14965, 15695, 54653, 92783, 97309, 128699, 273265, 463915, 486545, 643495, 3989669, 19948345]

約数ペア:

[(1, 19948345), (5, 3989669), (31, 643495), (41, 486545), (43, 463915), (73, 273265), (155, 128699), (205, 97309), (215, 92783), (365, 54653), (1271, 15695), (1333, 14965), (1763, 11315), (2263, 8815), (2993, 6665), (3139, 6355)]