21286638

素因数分解:

$2^1\times 3^4\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:263

約数の個数: 80

約数和(自身を含む): 51749280

約数和(自身を除く): 30462642

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 29, 46, 54, 58, 69, 81, 87, 138, 162, 174, 197, 207, 261, 394, 414, 522, 591, 621, 667, 783, 1182, 1242, 1334, 1566, 1773, 1863, 2001, 2349, 3546, 3726, 4002, 4531, 4698, 5319, 5713, 6003, 9062, 10638, 11426, 12006, 13593, 15957, 17139, 18009, 27186, 31914, 34278, 36018, 40779, 51417, 54027, 81558, 102834, 108054, 122337, 131399, 154251, 244674, 262798, 308502, 367011, 394197, 462753, 734022, 788394, 925506, 1182591, 2365182, 3547773, 7095546, 10643319, 21286638]

約数ペア:

[(1, 21286638), (2, 10643319), (3, 7095546), (6, 3547773), (9, 2365182), (18, 1182591), (23, 925506), (27, 788394), (29, 734022), (46, 462753), (54, 394197), (58, 367011), (69, 308502), (81, 262798), (87, 244674), (138, 154251), (162, 131399), (174, 122337), (197, 108054), (207, 102834), (261, 81558), (394, 54027), (414, 51417), (522, 40779), (591, 36018), (621, 34278), (667, 31914), (783, 27186), (1182, 18009), (1242, 17139), (1334, 15957), (1566, 13593), (1773, 12006), (1863, 11426), (2001, 10638), (2349, 9062), (3546, 6003), (3726, 5713), (4002, 5319), (4531, 4698)]