21069568

素因数分解:

$2^8\times {\mathrm{13}}^2\times {\mathrm{487}}^1$

素因数の和:529

約数の個数: 54

約数和(自身を含む): 45634344

約数和(自身を除く): 24564776

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 169, 208, 256, 338, 416, 487, 676, 832, 974, 1352, 1664, 1948, 2704, 3328, 3896, 5408, 6331, 7792, 10816, 12662, 15584, 21632, 25324, 31168, 43264, 50648, 62336, 82303, 101296, 124672, 164606, 202592, 329212, 405184, 658424, 810368, 1316848, 1620736, 2633696, 5267392, 10534784, 21069568]

約数ペア:

[(1, 21069568), (2, 10534784), (4, 5267392), (8, 2633696), (13, 1620736), (16, 1316848), (26, 810368), (32, 658424), (52, 405184), (64, 329212), (104, 202592), (128, 164606), (169, 124672), (208, 101296), (256, 82303), (338, 62336), (416, 50648), (487, 43264), (676, 31168), (832, 25324), (974, 21632), (1352, 15584), (1664, 12662), (1948, 10816), (2704, 7792), (3328, 6331), (3896, 5408)]