81636256

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{631}}^1$

素因数の和:965

約数の個数: 48

約数和(自身を含む): 173916288

約数和(自身を除く): 92280032

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 311, 416, 622, 631, 1244, 1262, 2488, 2524, 4043, 4976, 5048, 8086, 8203, 9952, 10096, 16172, 16406, 20192, 32344, 32812, 64688, 65624, 129376, 131248, 196241, 262496, 392482, 784964, 1569928, 2551133, 3139856, 5102266, 6279712, 10204532, 20409064, 40818128, 81636256]

約数ペア:

[(1, 81636256), (2, 40818128), (4, 20409064), (8, 10204532), (13, 6279712), (16, 5102266), (26, 3139856), (32, 2551133), (52, 1569928), (104, 784964), (208, 392482), (311, 262496), (416, 196241), (622, 131248), (631, 129376), (1244, 65624), (1262, 64688), (2488, 32812), (2524, 32344), (4043, 20192), (4976, 16406), (5048, 16172), (8086, 10096), (8203, 9952)]