28258000

素因数分解:

$2^4\times 5^3\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:293

約数の個数: 80

約数和(自身を含む): 69638400

約数和(自身を除く): 41380400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 125, 142, 199, 200, 250, 284, 355, 398, 400, 500, 568, 710, 796, 995, 1000, 1136, 1420, 1592, 1775, 1990, 2000, 2840, 3184, 3550, 3980, 4975, 5680, 7100, 7960, 8875, 9950, 14129, 14200, 15920, 17750, 19900, 24875, 28258, 28400, 35500, 39800, 49750, 56516, 70645, 71000, 79600, 99500, 113032, 141290, 142000, 199000, 226064, 282580, 353225, 398000, 565160, 706450, 1130320, 1412900, 1766125, 2825800, 3532250, 5651600, 7064500, 14129000, 28258000]

約数ペア:

[(1, 28258000), (2, 14129000), (4, 7064500), (5, 5651600), (8, 3532250), (10, 2825800), (16, 1766125), (20, 1412900), (25, 1130320), (40, 706450), (50, 565160), (71, 398000), (80, 353225), (100, 282580), (125, 226064), (142, 199000), (199, 142000), (200, 141290), (250, 113032), (284, 99500), (355, 79600), (398, 71000), (400, 70645), (500, 56516), (568, 49750), (710, 39800), (796, 35500), (995, 28400), (1000, 28258), (1136, 24875), (1420, 19900), (1592, 17750), (1775, 15920), (1990, 14200), (2000, 14129), (2840, 9950), (3184, 8875), (3550, 7960), (3980, 7100), (4975, 5680)]