20100000

素因数分解:

$2^5\times 3^1\times 5^5\times {\mathrm{67}}^1$

素因数の和:105

約数の個数: 144

約数和(自身を含む): 66933216

約数和(自身を除く): 46833216

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 67, 75, 80, 96, 100, 120, 125, 134, 150, 160, 200, 201, 240, 250, 268, 300, 335, 375, 400, 402, 480, 500, 536, 600, 625, 670, 750, 800, 804, 1000, 1005, 1072, 1200, 1250, 1340, 1500, 1608, 1675, 1875, 2000, 2010, 2144, 2400, 2500, 2680, 3000, 3125, 3216, 3350, 3750, 4000, 4020, 5000, 5025, 5360, 6000, 6250, 6432, 6700, 7500, 8040, 8375, 9375, 10000, 10050, 10720, 12000, 12500, 13400, 15000, 16080, 16750, 18750, 20000, 20100, 25000, 25125, 26800, 30000, 32160, 33500, 37500, 40200, 41875, 50000, 50250, 53600, 60000, 67000, 75000, 80400, 83750, 100000, 100500, 125625, 134000, 150000, 160800, 167500, 201000, 209375, 251250, 268000, 300000, 335000, 402000, 418750, 502500, 628125, 670000, 804000, 837500, 1005000, 1256250, 1340000, 1675000, 2010000, 2512500, 3350000, 4020000, 5025000, 6700000, 10050000, 20100000]

約数ペア:

[(1, 20100000), (2, 10050000), (3, 6700000), (4, 5025000), (5, 4020000), (6, 3350000), (8, 2512500), (10, 2010000), (12, 1675000), (15, 1340000), (16, 1256250), (20, 1005000), (24, 837500), (25, 804000), (30, 670000), (32, 628125), (40, 502500), (48, 418750), (50, 402000), (60, 335000), (67, 300000), (75, 268000), (80, 251250), (96, 209375), (100, 201000), (120, 167500), (125, 160800), (134, 150000), (150, 134000), (160, 125625), (200, 100500), (201, 100000), (240, 83750), (250, 80400), (268, 75000), (300, 67000), (335, 60000), (375, 53600), (400, 50250), (402, 50000), (480, 41875), (500, 40200), (536, 37500), (600, 33500), (625, 32160), (670, 30000), (750, 26800), (800, 25125), (804, 25000), (1000, 20100), (1005, 20000), (1072, 18750), (1200, 16750), (1250, 16080), (1340, 15000), (1500, 13400), (1608, 12500), (1675, 12000), (1875, 10720), (2000, 10050), (2010, 10000), (2144, 9375), (2400, 8375), (2500, 8040), (2680, 7500), (3000, 6700), (3125, 6432), (3216, 6250), (3350, 6000), (3750, 5360), (4000, 5025), (4020, 5000)]