28387872

素因数分解:

$2^5\times 3^2\times {\mathrm{241}}^1\times {\mathrm{409}}^1$

素因数の和:666

約数の個数: 72

約数和(自身を含む): 81261180

約数和(自身を除く): 52873308

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 241, 288, 409, 482, 723, 818, 964, 1227, 1446, 1636, 1928, 2169, 2454, 2892, 3272, 3681, 3856, 4338, 4908, 5784, 6544, 7362, 7712, 8676, 9816, 11568, 13088, 14724, 17352, 19632, 23136, 29448, 34704, 39264, 58896, 69408, 98569, 117792, 197138, 295707, 394276, 591414, 788552, 887121, 1182828, 1577104, 1774242, 2365656, 3154208, 3548484, 4731312, 7096968, 9462624, 14193936, 28387872]

約数ペア:

[(1, 28387872), (2, 14193936), (3, 9462624), (4, 7096968), (6, 4731312), (8, 3548484), (9, 3154208), (12, 2365656), (16, 1774242), (18, 1577104), (24, 1182828), (32, 887121), (36, 788552), (48, 591414), (72, 394276), (96, 295707), (144, 197138), (241, 117792), (288, 98569), (409, 69408), (482, 58896), (723, 39264), (818, 34704), (964, 29448), (1227, 23136), (1446, 19632), (1636, 17352), (1928, 14724), (2169, 13088), (2454, 11568), (2892, 9816), (3272, 8676), (3681, 7712), (3856, 7362), (4338, 6544), (4908, 5784)]