81644576

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:554

約数の個数: 72

約数和(自身を含む): 180036864

約数和(自身を除く): 98392288

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 104, 124, 169, 208, 248, 338, 403, 416, 487, 496, 676, 806, 974, 992, 1352, 1612, 1948, 2704, 3224, 3896, 5239, 5408, 6331, 6448, 7792, 10478, 12662, 12896, 15097, 15584, 20956, 25324, 30194, 41912, 50648, 60388, 82303, 83824, 101296, 120776, 164606, 167648, 196261, 202592, 241552, 329212, 392522, 483104, 658424, 785044, 1316848, 1570088, 2551393, 2633696, 3140176, 5102786, 6280352, 10205572, 20411144, 40822288, 81644576]

約数ペア:

[(1, 81644576), (2, 40822288), (4, 20411144), (8, 10205572), (13, 6280352), (16, 5102786), (26, 3140176), (31, 2633696), (32, 2551393), (52, 1570088), (62, 1316848), (104, 785044), (124, 658424), (169, 483104), (208, 392522), (248, 329212), (338, 241552), (403, 202592), (416, 196261), (487, 167648), (496, 164606), (676, 120776), (806, 101296), (974, 83824), (992, 82303), (1352, 60388), (1612, 50648), (1948, 41912), (2704, 30194), (3224, 25324), (3896, 20956), (5239, 15584), (5408, 15097), (6331, 12896), (6448, 12662), (7792, 10478)]