21503612

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{163}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 42430080

約数和(自身を除く): 20926468

約数列:

[1, 2, 4, 13, 26, 43, 52, 59, 86, 118, 163, 172, 236, 326, 559, 652, 767, 1118, 1534, 2119, 2236, 2537, 3068, 4238, 5074, 7009, 8476, 9617, 10148, 14018, 19234, 28036, 32981, 38468, 65962, 91117, 125021, 131924, 182234, 250042, 364468, 413531, 500084, 827062, 1654124, 5375903, 10751806, 21503612]

約数ペア:

[(1, 21503612), (2, 10751806), (4, 5375903), (13, 1654124), (26, 827062), (43, 500084), (52, 413531), (59, 364468), (86, 250042), (118, 182234), (163, 131924), (172, 125021), (236, 91117), (326, 65962), (559, 38468), (652, 32981), (767, 28036), (1118, 19234), (1534, 14018), (2119, 10148), (2236, 9617), (2537, 8476), (3068, 7009), (4238, 5074)]