28261380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67289}}^1$

素因数の和:67308

約数の個数: 48

約数和(自身を含む): 90437760

約数和(自身を除く): 62176380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 67289, 134578, 201867, 269156, 336445, 403734, 471023, 672890, 807468, 942046, 1009335, 1345780, 1413069, 1884092, 2018670, 2355115, 2826138, 4037340, 4710230, 5652276, 7065345, 9420460, 14130690, 28261380]

約数ペア:

[(1, 28261380), (2, 14130690), (3, 9420460), (4, 7065345), (5, 5652276), (6, 4710230), (7, 4037340), (10, 2826138), (12, 2355115), (14, 2018670), (15, 1884092), (20, 1413069), (21, 1345780), (28, 1009335), (30, 942046), (35, 807468), (42, 672890), (60, 471023), (70, 403734), (84, 336445), (105, 269156), (140, 201867), (210, 134578), (420, 67289)]