20625500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:180

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 32209828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 71, 83, 100, 125, 140, 142, 166, 175, 250, 284, 332, 350, 355, 415, 497, 500, 581, 700, 710, 830, 875, 994, 1162, 1420, 1660, 1750, 1775, 1988, 2075, 2324, 2485, 2905, 3500, 3550, 4150, 4970, 5810, 5893, 7100, 8300, 8875, 9940, 10375, 11620, 11786, 12425, 14525, 17750, 20750, 23572, 24850, 29050, 29465, 35500, 41251, 41500, 49700, 58100, 58930, 62125, 72625, 82502, 117860, 124250, 145250, 147325, 165004, 206255, 248500, 290500, 294650, 412510, 589300, 736625, 825020, 1031275, 1473250, 2062550, 2946500, 4125100, 5156375, 10312750, 20625500]

約数ペア:

[(1, 20625500), (2, 10312750), (4, 5156375), (5, 4125100), (7, 2946500), (10, 2062550), (14, 1473250), (20, 1031275), (25, 825020), (28, 736625), (35, 589300), (50, 412510), (70, 294650), (71, 290500), (83, 248500), (100, 206255), (125, 165004), (140, 147325), (142, 145250), (166, 124250), (175, 117860), (250, 82502), (284, 72625), (332, 62125), (350, 58930), (355, 58100), (415, 49700), (497, 41500), (500, 41251), (581, 35500), (700, 29465), (710, 29050), (830, 24850), (875, 23572), (994, 20750), (1162, 17750), (1420, 14525), (1660, 12425), (1750, 11786), (1775, 11620), (1988, 10375), (2075, 9940), (2324, 8875), (2485, 8300), (2905, 7100), (3500, 5893), (3550, 5810), (4150, 4970)]