21026040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25031}}^1$

素因数の和:25052

約数の個数: 64

約数和(自身を含む): 72092160

約数和(自身を除く): 51066120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25031, 50062, 75093, 100124, 125155, 150186, 175217, 200248, 250310, 300372, 350434, 375465, 500620, 525651, 600744, 700868, 750930, 876085, 1001240, 1051302, 1401736, 1501860, 1752170, 2102604, 2628255, 3003720, 3504340, 4205208, 5256510, 7008680, 10513020, 21026040]

約数ペア:

[(1, 21026040), (2, 10513020), (3, 7008680), (4, 5256510), (5, 4205208), (6, 3504340), (7, 3003720), (8, 2628255), (10, 2102604), (12, 1752170), (14, 1501860), (15, 1401736), (20, 1051302), (21, 1001240), (24, 876085), (28, 750930), (30, 700868), (35, 600744), (40, 525651), (42, 500620), (56, 375465), (60, 350434), (70, 300372), (84, 250310), (105, 200248), (120, 175217), (140, 150186), (168, 125155), (210, 100124), (280, 75093), (420, 50062), (840, 25031)]