19649968

素因数分解:

$2^4\times {\mathrm{13}}^4\times {\mathrm{43}}^1$

素因数の和:103

約数の個数: 50

約数和(自身を含む): 42203524

約数和(自身を除く): 22553556

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 169, 172, 208, 338, 344, 559, 676, 688, 1118, 1352, 2197, 2236, 2704, 4394, 4472, 7267, 8788, 8944, 14534, 17576, 28561, 29068, 35152, 57122, 58136, 94471, 114244, 116272, 188942, 228488, 377884, 456976, 755768, 1228123, 1511536, 2456246, 4912492, 9824984, 19649968]

約数ペア:

[(1, 19649968), (2, 9824984), (4, 4912492), (8, 2456246), (13, 1511536), (16, 1228123), (26, 755768), (43, 456976), (52, 377884), (86, 228488), (104, 188942), (169, 116272), (172, 114244), (208, 94471), (338, 58136), (344, 57122), (559, 35152), (676, 29068), (688, 28561), (1118, 17576), (1352, 14534), (2197, 8944), (2236, 8788), (2704, 7267), (4394, 4472)]