20504144

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{617}}^1$

素因数の和:723

約数の個数: 40

約数和(自身を含む): 41687808

約数和(自身を除く): 21183664

約数列:

[1, 2, 4, 8, 16, 31, 62, 67, 124, 134, 248, 268, 496, 536, 617, 1072, 1234, 2077, 2468, 4154, 4936, 8308, 9872, 16616, 19127, 33232, 38254, 41339, 76508, 82678, 153016, 165356, 306032, 330712, 661424, 1281509, 2563018, 5126036, 10252072, 20504144]

約数ペア:

[(1, 20504144), (2, 10252072), (4, 5126036), (8, 2563018), (16, 1281509), (31, 661424), (62, 330712), (67, 306032), (124, 165356), (134, 153016), (248, 82678), (268, 76508), (496, 41339), (536, 38254), (617, 33232), (1072, 19127), (1234, 16616), (2077, 9872), (2468, 8308), (4154, 4936)]