19903856

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2503}}^1$

素因数の和:2589

約数の個数: 40

約数和(自身を含む): 44711424

約数和(自身を除く): 24807568

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2503, 3976, 5006, 7952, 10012, 17521, 20024, 35042, 40048, 70084, 140168, 177713, 280336, 355426, 710852, 1243991, 1421704, 2487982, 2843408, 4975964, 9951928, 19903856]

約数ペア:

[(1, 19903856), (2, 9951928), (4, 4975964), (7, 2843408), (8, 2487982), (14, 1421704), (16, 1243991), (28, 710852), (56, 355426), (71, 280336), (112, 177713), (142, 140168), (284, 70084), (497, 40048), (568, 35042), (994, 20024), (1136, 17521), (1988, 10012), (2503, 7952), (3976, 5006)]