20404356

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{541}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 54633600

約数和(自身を除く): 34229244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 449, 541, 898, 1082, 1347, 1623, 1796, 2164, 2694, 3143, 3246, 3787, 5388, 6286, 6492, 7574, 9429, 11361, 12572, 15148, 18858, 22722, 37716, 45444, 242909, 485818, 728727, 971636, 1457454, 1700363, 2914908, 3400726, 5101089, 6801452, 10202178, 20404356]

約数ペア:

[(1, 20404356), (2, 10202178), (3, 6801452), (4, 5101089), (6, 3400726), (7, 2914908), (12, 1700363), (14, 1457454), (21, 971636), (28, 728727), (42, 485818), (84, 242909), (449, 45444), (541, 37716), (898, 22722), (1082, 18858), (1347, 15148), (1623, 12572), (1796, 11361), (2164, 9429), (2694, 7574), (3143, 6492), (3246, 6286), (3787, 5388)]