19481980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3761}}^1$

素因数の和:3814

約数の個数: 48

約数和(自身を含む): 48033216

約数和(自身を除く): 28551236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 3761, 5180, 7522, 15044, 18805, 26327, 37610, 52654, 75220, 105308, 131635, 139157, 263270, 278314, 526540, 556628, 695785, 974099, 1391570, 1948198, 2783140, 3896396, 4870495, 9740990, 19481980]

約数ペア:

[(1, 19481980), (2, 9740990), (4, 4870495), (5, 3896396), (7, 2783140), (10, 1948198), (14, 1391570), (20, 974099), (28, 695785), (35, 556628), (37, 526540), (70, 278314), (74, 263270), (140, 139157), (148, 131635), (185, 105308), (259, 75220), (370, 52654), (518, 37610), (740, 26327), (1036, 18805), (1295, 15044), (2590, 7522), (3761, 5180)]