81786560

素因数分解:

$2^6\times 5^1\times {\mathrm{431}}^1\times {\mathrm{593}}^1$

素因数の和:1041

約数の個数: 56

約数和(自身を含む): 195535296

約数和(自身を除く): 113748736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 431, 593, 862, 1186, 1724, 2155, 2372, 2965, 3448, 4310, 4744, 5930, 6896, 8620, 9488, 11860, 13792, 17240, 18976, 23720, 27584, 34480, 37952, 47440, 68960, 94880, 137920, 189760, 255583, 511166, 1022332, 1277915, 2044664, 2555830, 4089328, 5111660, 8178656, 10223320, 16357312, 20446640, 40893280, 81786560]

約数ペア:

[(1, 81786560), (2, 40893280), (4, 20446640), (5, 16357312), (8, 10223320), (10, 8178656), (16, 5111660), (20, 4089328), (32, 2555830), (40, 2044664), (64, 1277915), (80, 1022332), (160, 511166), (320, 255583), (431, 189760), (593, 137920), (862, 94880), (1186, 68960), (1724, 47440), (2155, 37952), (2372, 34480), (2965, 27584), (3448, 23720), (4310, 18976), (4744, 17240), (5930, 13792), (6896, 11860), (8620, 9488)]