20884576

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{569}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 22781984

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 74, 124, 148, 248, 296, 496, 569, 592, 992, 1138, 1147, 1184, 2276, 2294, 4552, 4588, 9104, 9176, 17639, 18208, 18352, 21053, 35278, 36704, 42106, 70556, 84212, 141112, 168424, 282224, 336848, 564448, 652643, 673696, 1305286, 2610572, 5221144, 10442288, 20884576]

約数ペア:

[(1, 20884576), (2, 10442288), (4, 5221144), (8, 2610572), (16, 1305286), (31, 673696), (32, 652643), (37, 564448), (62, 336848), (74, 282224), (124, 168424), (148, 141112), (248, 84212), (296, 70556), (496, 42106), (569, 36704), (592, 35278), (992, 21053), (1138, 18352), (1147, 18208), (1184, 17639), (2276, 9176), (2294, 9104), (4552, 4588)]