21428820

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5669}}^1$

素因数の和:5694

約数の個数: 96

約数和(自身を含む): 76204800

約数和(自身を除く): 54775980

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, 5669, 11338, 17007, 22676, 28345, 34014, 39683, 51021, 56690, 68028, 79366, 85035, 102042, 113380, 119049, 153063, 158732, 170070, 198415, 204084, 238098, 255105, 306126, 340140, 357147, 396830, 476196, 510210, 595245, 612252, 714294, 765315, 793660, 1020420, 1071441, 1190490, 1428588, 1530630, 1785735, 2142882, 2380980, 3061260, 3571470, 4285764, 5357205, 7142940, 10714410, 21428820]

約数ペア:

[(1, 21428820), (2, 10714410), (3, 7142940), (4, 5357205), (5, 4285764), (6, 3571470), (7, 3061260), (9, 2380980), (10, 2142882), (12, 1785735), (14, 1530630), (15, 1428588), (18, 1190490), (20, 1071441), (21, 1020420), (27, 793660), (28, 765315), (30, 714294), (35, 612252), (36, 595245), (42, 510210), (45, 476196), (54, 396830), (60, 357147), (63, 340140), (70, 306126), (84, 255105), (90, 238098), (105, 204084), (108, 198415), (126, 170070), (135, 158732), (140, 153063), (180, 119049), (189, 113380), (210, 102042), (252, 85035), (270, 79366), (315, 68028), (378, 56690), (420, 51021), (540, 39683), (630, 34014), (756, 28345), (945, 22676), (1260, 17007), (1890, 11338), (3780, 5669)]