81990610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{2617}}^1$

素因数の和:2878

約数の個数: 32

約数和(自身を含む): 159656112

約数和(自身を除く): 77665502

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 241, 482, 1205, 2410, 2617, 3133, 5234, 6266, 13085, 15665, 26170, 31330, 34021, 68042, 170105, 340210, 630697, 1261394, 3153485, 6306970, 8199061, 16398122, 40995305, 81990610]

約数ペア:

[(1, 81990610), (2, 40995305), (5, 16398122), (10, 8199061), (13, 6306970), (26, 3153485), (65, 1261394), (130, 630697), (241, 340210), (482, 170105), (1205, 68042), (2410, 34021), (2617, 31330), (3133, 26170), (5234, 15665), (6266, 13085)]