21240870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2467}}^1$

素因数の和:2525

約数の個数: 64

約数和(自身を含む): 59705856

約数和(自身を除く): 38464986

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 41, 42, 70, 82, 105, 123, 205, 210, 246, 287, 410, 574, 615, 861, 1230, 1435, 1722, 2467, 2870, 4305, 4934, 7401, 8610, 12335, 14802, 17269, 24670, 34538, 37005, 51807, 74010, 86345, 101147, 103614, 172690, 202294, 259035, 303441, 505735, 518070, 606882, 708029, 1011470, 1416058, 1517205, 2124087, 3034410, 3540145, 4248174, 7080290, 10620435, 21240870]

約数ペア:

[(1, 21240870), (2, 10620435), (3, 7080290), (5, 4248174), (6, 3540145), (7, 3034410), (10, 2124087), (14, 1517205), (15, 1416058), (21, 1011470), (30, 708029), (35, 606882), (41, 518070), (42, 505735), (70, 303441), (82, 259035), (105, 202294), (123, 172690), (205, 103614), (210, 101147), (246, 86345), (287, 74010), (410, 51807), (574, 37005), (615, 34538), (861, 24670), (1230, 17269), (1435, 14802), (1722, 12335), (2467, 8610), (2870, 7401), (4305, 4934)]