21125104

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1319}}^1$

素因数の和:1358

約数の個数: 80

約数和(自身を含む): 54996480

約数和(自身を除く): 33871376

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 112, 143, 154, 176, 182, 208, 286, 308, 364, 572, 616, 728, 1001, 1144, 1232, 1319, 1456, 2002, 2288, 2638, 4004, 5276, 8008, 9233, 10552, 14509, 16016, 17147, 18466, 21104, 29018, 34294, 36932, 58036, 68588, 73864, 101563, 116072, 120029, 137176, 147728, 188617, 203126, 232144, 240058, 274352, 377234, 406252, 480116, 754468, 812504, 960232, 1320319, 1508936, 1625008, 1920464, 2640638, 3017872, 5281276, 10562552, 21125104]

約数ペア:

[(1, 21125104), (2, 10562552), (4, 5281276), (7, 3017872), (8, 2640638), (11, 1920464), (13, 1625008), (14, 1508936), (16, 1320319), (22, 960232), (26, 812504), (28, 754468), (44, 480116), (52, 406252), (56, 377234), (77, 274352), (88, 240058), (91, 232144), (104, 203126), (112, 188617), (143, 147728), (154, 137176), (176, 120029), (182, 116072), (208, 101563), (286, 73864), (308, 68588), (364, 58036), (572, 36932), (616, 34294), (728, 29018), (1001, 21104), (1144, 18466), (1232, 17147), (1319, 16016), (1456, 14509), (2002, 10552), (2288, 9233), (2638, 8008), (4004, 5276)]