28055440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{421}}^1$

素因数の和:465

約数の個数: 120

約数和(自身を含む): 80532792

約数和(自身を除く): 52477352

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 170, 196, 238, 245, 272, 280, 340, 392, 421, 476, 490, 560, 595, 680, 784, 833, 842, 952, 980, 1190, 1360, 1666, 1684, 1904, 1960, 2105, 2380, 2947, 3332, 3368, 3920, 4165, 4210, 4760, 5894, 6664, 6736, 7157, 8330, 8420, 9520, 11788, 13328, 14314, 14735, 16660, 16840, 20629, 23576, 28628, 29470, 33320, 33680, 35785, 41258, 47152, 50099, 57256, 58940, 66640, 71570, 82516, 100198, 103145, 114512, 117880, 143140, 165032, 200396, 206290, 235760, 250495, 286280, 330064, 350693, 400792, 412580, 500990, 572560, 701386, 801584, 825160, 1001980, 1402772, 1650320, 1753465, 2003960, 2805544, 3506930, 4007920, 5611088, 7013860, 14027720, 28055440]

約数ペア:

[(1, 28055440), (2, 14027720), (4, 7013860), (5, 5611088), (7, 4007920), (8, 3506930), (10, 2805544), (14, 2003960), (16, 1753465), (17, 1650320), (20, 1402772), (28, 1001980), (34, 825160), (35, 801584), (40, 701386), (49, 572560), (56, 500990), (68, 412580), (70, 400792), (80, 350693), (85, 330064), (98, 286280), (112, 250495), (119, 235760), (136, 206290), (140, 200396), (170, 165032), (196, 143140), (238, 117880), (245, 114512), (272, 103145), (280, 100198), (340, 82516), (392, 71570), (421, 66640), (476, 58940), (490, 57256), (560, 50099), (595, 47152), (680, 41258), (784, 35785), (833, 33680), (842, 33320), (952, 29470), (980, 28628), (1190, 23576), (1360, 20629), (1666, 16840), (1684, 16660), (1904, 14735), (1960, 14314), (2105, 13328), (2380, 11788), (2947, 9520), (3332, 8420), (3368, 8330), (3920, 7157), (4165, 6736), (4210, 6664), (4760, 5894)]