20282500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:111

約数の個数: 120

約数和(自身を含む): 54232640

約数和(自身を除く): 33950140

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 61, 70, 76, 95, 100, 122, 125, 133, 140, 175, 190, 244, 250, 266, 305, 350, 380, 427, 475, 500, 532, 610, 625, 665, 700, 854, 875, 950, 1159, 1220, 1250, 1330, 1525, 1708, 1750, 1900, 2135, 2318, 2375, 2500, 2660, 3050, 3325, 3500, 4270, 4375, 4636, 4750, 5795, 6100, 6650, 7625, 8113, 8540, 8750, 9500, 10675, 11590, 11875, 13300, 15250, 16226, 16625, 17500, 21350, 23180, 23750, 28975, 30500, 32452, 33250, 38125, 40565, 42700, 47500, 53375, 57950, 66500, 76250, 81130, 83125, 106750, 115900, 144875, 152500, 162260, 166250, 202825, 213500, 266875, 289750, 332500, 405650, 533750, 579500, 724375, 811300, 1014125, 1067500, 1448750, 2028250, 2897500, 4056500, 5070625, 10141250, 20282500]

約数ペア:

[(1, 20282500), (2, 10141250), (4, 5070625), (5, 4056500), (7, 2897500), (10, 2028250), (14, 1448750), (19, 1067500), (20, 1014125), (25, 811300), (28, 724375), (35, 579500), (38, 533750), (50, 405650), (61, 332500), (70, 289750), (76, 266875), (95, 213500), (100, 202825), (122, 166250), (125, 162260), (133, 152500), (140, 144875), (175, 115900), (190, 106750), (244, 83125), (250, 81130), (266, 76250), (305, 66500), (350, 57950), (380, 53375), (427, 47500), (475, 42700), (500, 40565), (532, 38125), (610, 33250), (625, 32452), (665, 30500), (700, 28975), (854, 23750), (875, 23180), (950, 21350), (1159, 17500), (1220, 16625), (1250, 16226), (1330, 15250), (1525, 13300), (1708, 11875), (1750, 11590), (1900, 10675), (2135, 9500), (2318, 8750), (2375, 8540), (2500, 8113), (2660, 7625), (3050, 6650), (3325, 6100), (3500, 5795), (4270, 4750), (4375, 4636)]