21028140

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5563}}^1$

素因数の和:5588

約数の個数: 96

約数和(自身を含む): 74780160

約数和(自身を除く): 53752020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5563, 11126, 16689, 22252, 27815, 33378, 38941, 50067, 55630, 66756, 77882, 83445, 100134, 111260, 116823, 150201, 155764, 166890, 194705, 200268, 233646, 250335, 300402, 333780, 350469, 389410, 467292, 500670, 584115, 600804, 700938, 751005, 778820, 1001340, 1051407, 1168230, 1401876, 1502010, 1752345, 2102814, 2336460, 3004020, 3504690, 4205628, 5257035, 7009380, 10514070, 21028140]

約数ペア:

[(1, 21028140), (2, 10514070), (3, 7009380), (4, 5257035), (5, 4205628), (6, 3504690), (7, 3004020), (9, 2336460), (10, 2102814), (12, 1752345), (14, 1502010), (15, 1401876), (18, 1168230), (20, 1051407), (21, 1001340), (27, 778820), (28, 751005), (30, 700938), (35, 600804), (36, 584115), (42, 500670), (45, 467292), (54, 389410), (60, 350469), (63, 333780), (70, 300402), (84, 250335), (90, 233646), (105, 200268), (108, 194705), (126, 166890), (135, 155764), (140, 150201), (180, 116823), (189, 111260), (210, 100134), (252, 83445), (270, 77882), (315, 66756), (378, 55630), (420, 50067), (540, 38941), (630, 33378), (756, 27815), (945, 22252), (1260, 16689), (1890, 11126), (3780, 5563)]