20454000

素因数分解:

$2^4\times 3^1\times 5^3\times 7^1\times {\mathrm{487}}^1$

素因数の和:520

約数の個数: 160

約数和(自身を含む): 75518976

約数和(自身を除く): 55064976

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, 487, 500, 525, 560, 600, 700, 750, 840, 875, 974, 1000, 1050, 1200, 1400, 1461, 1500, 1680, 1750, 1948, 2000, 2100, 2435, 2625, 2800, 2922, 3000, 3409, 3500, 3896, 4200, 4870, 5250, 5844, 6000, 6818, 7000, 7305, 7792, 8400, 9740, 10227, 10500, 11688, 12175, 13636, 14000, 14610, 17045, 19480, 20454, 21000, 23376, 24350, 27272, 29220, 34090, 36525, 38960, 40908, 42000, 48700, 51135, 54544, 58440, 60875, 68180, 73050, 81816, 85225, 97400, 102270, 116880, 121750, 136360, 146100, 163632, 170450, 182625, 194800, 204540, 243500, 255675, 272720, 292200, 340900, 365250, 409080, 426125, 487000, 511350, 584400, 681800, 730500, 818160, 852250, 974000, 1022700, 1278375, 1363600, 1461000, 1704500, 2045400, 2556750, 2922000, 3409000, 4090800, 5113500, 6818000, 10227000, 20454000]

約数ペア:

[(1, 20454000), (2, 10227000), (3, 6818000), (4, 5113500), (5, 4090800), (6, 3409000), (7, 2922000), (8, 2556750), (10, 2045400), (12, 1704500), (14, 1461000), (15, 1363600), (16, 1278375), (20, 1022700), (21, 974000), (24, 852250), (25, 818160), (28, 730500), (30, 681800), (35, 584400), (40, 511350), (42, 487000), (48, 426125), (50, 409080), (56, 365250), (60, 340900), (70, 292200), (75, 272720), (80, 255675), (84, 243500), (100, 204540), (105, 194800), (112, 182625), (120, 170450), (125, 163632), (140, 146100), (150, 136360), (168, 121750), (175, 116880), (200, 102270), (210, 97400), (240, 85225), (250, 81816), (280, 73050), (300, 68180), (336, 60875), (350, 58440), (375, 54544), (400, 51135), (420, 48700), (487, 42000), (500, 40908), (525, 38960), (560, 36525), (600, 34090), (700, 29220), (750, 27272), (840, 24350), (875, 23376), (974, 21000), (1000, 20454), (1050, 19480), (1200, 17045), (1400, 14610), (1461, 14000), (1500, 13636), (1680, 12175), (1750, 11688), (1948, 10500), (2000, 10227), (2100, 9740), (2435, 8400), (2625, 7792), (2800, 7305), (2922, 7000), (3000, 6818), (3409, 6000), (3500, 5844), (3896, 5250), (4200, 4870)]