20958000

素因数分解:

$2^4\times 3^1\times 5^3\times 7^1\times {\mathrm{499}}^1$

素因数の和:532

約数の個数: 160

約数和(自身を含む): 77376000

約数和(自身を除く): 56418000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 100, 105, 112, 120, 125, 140, 150, 168, 175, 200, 210, 240, 250, 280, 300, 336, 350, 375, 400, 420, 499, 500, 525, 560, 600, 700, 750, 840, 875, 998, 1000, 1050, 1200, 1400, 1497, 1500, 1680, 1750, 1996, 2000, 2100, 2495, 2625, 2800, 2994, 3000, 3493, 3500, 3992, 4200, 4990, 5250, 5988, 6000, 6986, 7000, 7485, 7984, 8400, 9980, 10479, 10500, 11976, 12475, 13972, 14000, 14970, 17465, 19960, 20958, 21000, 23952, 24950, 27944, 29940, 34930, 37425, 39920, 41916, 42000, 49900, 52395, 55888, 59880, 62375, 69860, 74850, 83832, 87325, 99800, 104790, 119760, 124750, 139720, 149700, 167664, 174650, 187125, 199600, 209580, 249500, 261975, 279440, 299400, 349300, 374250, 419160, 436625, 499000, 523950, 598800, 698600, 748500, 838320, 873250, 998000, 1047900, 1309875, 1397200, 1497000, 1746500, 2095800, 2619750, 2994000, 3493000, 4191600, 5239500, 6986000, 10479000, 20958000]

約数ペア:

[(1, 20958000), (2, 10479000), (3, 6986000), (4, 5239500), (5, 4191600), (6, 3493000), (7, 2994000), (8, 2619750), (10, 2095800), (12, 1746500), (14, 1497000), (15, 1397200), (16, 1309875), (20, 1047900), (21, 998000), (24, 873250), (25, 838320), (28, 748500), (30, 698600), (35, 598800), (40, 523950), (42, 499000), (48, 436625), (50, 419160), (56, 374250), (60, 349300), (70, 299400), (75, 279440), (80, 261975), (84, 249500), (100, 209580), (105, 199600), (112, 187125), (120, 174650), (125, 167664), (140, 149700), (150, 139720), (168, 124750), (175, 119760), (200, 104790), (210, 99800), (240, 87325), (250, 83832), (280, 74850), (300, 69860), (336, 62375), (350, 59880), (375, 55888), (400, 52395), (420, 49900), (499, 42000), (500, 41916), (525, 39920), (560, 37425), (600, 34930), (700, 29940), (750, 27944), (840, 24950), (875, 23952), (998, 21000), (1000, 20958), (1050, 19960), (1200, 17465), (1400, 14970), (1497, 14000), (1500, 13972), (1680, 12475), (1750, 11976), (1996, 10500), (2000, 10479), (2100, 9980), (2495, 8400), (2625, 7984), (2800, 7485), (2994, 7000), (3000, 6986), (3493, 6000), (3500, 5988), (3992, 5250), (4200, 4990)]