420666764

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:188

約数の個数: 144

約数和(自身を含む): 960664320

約数和(自身を除く): 539997556

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 43, 49, 71, 74, 76, 86, 98, 133, 142, 148, 172, 196, 259, 266, 284, 301, 497, 518, 532, 602, 703, 817, 931, 994, 1036, 1204, 1349, 1406, 1591, 1634, 1813, 1862, 1988, 2107, 2627, 2698, 2812, 3053, 3182, 3268, 3479, 3626, 3724, 4214, 4921, 5254, 5396, 5719, 6106, 6364, 6958, 7252, 8428, 9443, 9842, 10508, 11137, 11438, 12212, 13916, 18389, 18886, 19684, 21371, 22274, 22876, 30229, 34447, 36778, 37772, 40033, 42742, 44548, 49913, 58007, 60458, 66101, 68894, 73556, 77959, 80066, 85484, 99826, 112961, 116014, 120916, 128723, 132202, 137788, 149597, 155918, 160132, 199652, 211603, 225922, 232028, 257446, 264404, 299194, 311836, 349391, 406049, 423206, 451844, 514892, 598388, 698782, 790727, 812098, 846412, 1397564, 1481221, 1581454, 1624196, 2146259, 2445737, 2842343, 2962442, 3162908, 4292518, 4891474, 5535089, 5684686, 5924884, 8585036, 9782948, 11070178, 11369372, 15023813, 22140356, 30047626, 60095252, 105166691, 210333382, 420666764]

約数ペア:

[(1, 420666764), (2, 210333382), (4, 105166691), (7, 60095252), (14, 30047626), (19, 22140356), (28, 15023813), (37, 11369372), (38, 11070178), (43, 9782948), (49, 8585036), (71, 5924884), (74, 5684686), (76, 5535089), (86, 4891474), (98, 4292518), (133, 3162908), (142, 2962442), (148, 2842343), (172, 2445737), (196, 2146259), (259, 1624196), (266, 1581454), (284, 1481221), (301, 1397564), (497, 846412), (518, 812098), (532, 790727), (602, 698782), (703, 598388), (817, 514892), (931, 451844), (994, 423206), (1036, 406049), (1204, 349391), (1349, 311836), (1406, 299194), (1591, 264404), (1634, 257446), (1813, 232028), (1862, 225922), (1988, 211603), (2107, 199652), (2627, 160132), (2698, 155918), (2812, 149597), (3053, 137788), (3182, 132202), (3268, 128723), (3479, 120916), (3626, 116014), (3724, 112961), (4214, 99826), (4921, 85484), (5254, 80066), (5396, 77959), (5719, 73556), (6106, 68894), (6364, 66101), (6958, 60458), (7252, 58007), (8428, 49913), (9443, 44548), (9842, 42742), (10508, 40033), (11137, 37772), (11438, 36778), (12212, 34447), (13916, 30229), (18389, 22876), (18886, 22274), (19684, 21371)]