21044996840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{409}}^1\times {\mathrm{1217}}^1$

素因数の和:1795

約数の個数: 128

約数和(自身を含む): 54652147200

約数和(自身を除く): 33607150360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 151, 280, 302, 409, 604, 755, 818, 1057, 1208, 1217, 1510, 1636, 2045, 2114, 2434, 2863, 3020, 3272, 4090, 4228, 4868, 5285, 5726, 6040, 6085, 8180, 8456, 8519, 9736, 10570, 11452, 12170, 14315, 16360, 17038, 21140, 22904, 24340, 28630, 34076, 42280, 42595, 48680, 57260, 61759, 68152, 85190, 114520, 123518, 170380, 183767, 247036, 308795, 340760, 367534, 432313, 494072, 497753, 617590, 735068, 864626, 918835, 995506, 1235180, 1286369, 1470136, 1729252, 1837670, 1991012, 2161565, 2470360, 2488765, 2572738, 3458504, 3484271, 3675340, 3982024, 4323130, 4977530, 5145476, 6431845, 6968542, 7350680, 8646260, 9955060, 10290952, 12863690, 13937084, 17292520, 17421355, 19910120, 25727380, 27874168, 34842710, 51454760, 69685420, 75160703, 139370840, 150321406, 300642812, 375803515, 526124921, 601285624, 751607030, 1052249842, 1503214060, 2104499684, 2630624605, 3006428120, 4208999368, 5261249210, 10522498420, 21044996840]

約数ペア:

[(1, 21044996840), (2, 10522498420), (4, 5261249210), (5, 4208999368), (7, 3006428120), (8, 2630624605), (10, 2104499684), (14, 1503214060), (20, 1052249842), (28, 751607030), (35, 601285624), (40, 526124921), (56, 375803515), (70, 300642812), (140, 150321406), (151, 139370840), (280, 75160703), (302, 69685420), (409, 51454760), (604, 34842710), (755, 27874168), (818, 25727380), (1057, 19910120), (1208, 17421355), (1217, 17292520), (1510, 13937084), (1636, 12863690), (2045, 10290952), (2114, 9955060), (2434, 8646260), (2863, 7350680), (3020, 6968542), (3272, 6431845), (4090, 5145476), (4228, 4977530), (4868, 4323130), (5285, 3982024), (5726, 3675340), (6040, 3484271), (6085, 3458504), (8180, 2572738), (8456, 2488765), (8519, 2470360), (9736, 2161565), (10570, 1991012), (11452, 1837670), (12170, 1729252), (14315, 1470136), (16360, 1286369), (17038, 1235180), (21140, 995506), (22904, 918835), (24340, 864626), (28630, 735068), (34076, 617590), (42280, 497753), (42595, 494072), (48680, 432313), (57260, 367534), (61759, 340760), (68152, 308795), (85190, 247036), (114520, 183767), (123518, 170380)]