401990144

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1$

素因数の和:142

約数の個数: 120

約数和(自身を含む): 893938320

約数和(自身を除く): 491948176

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 43, 62, 64, 76, 86, 124, 128, 152, 172, 248, 256, 304, 344, 496, 512, 589, 608, 688, 817, 961, 992, 1178, 1216, 1333, 1376, 1634, 1922, 1984, 2356, 2432, 2666, 2752, 3268, 3844, 3968, 4712, 4864, 5332, 5504, 6536, 7688, 7936, 9424, 9728, 10664, 11008, 13072, 15376, 15872, 18259, 18848, 21328, 22016, 25327, 26144, 30752, 36518, 37696, 41323, 42656, 50654, 52288, 61504, 73036, 75392, 82646, 85312, 101308, 104576, 123008, 146072, 150784, 165292, 170624, 202616, 209152, 246016, 292144, 301568, 330584, 341248, 405232, 418304, 492032, 584288, 661168, 682496, 785137, 810464, 1168576, 1322336, 1570274, 1620928, 2337152, 2644672, 3140548, 3241856, 4674304, 5289344, 6281096, 6483712, 9348608, 10578688, 12562192, 12967424, 21157376, 25124384, 50248768, 100497536, 200995072, 401990144]

約数ペア:

[(1, 401990144), (2, 200995072), (4, 100497536), (8, 50248768), (16, 25124384), (19, 21157376), (31, 12967424), (32, 12562192), (38, 10578688), (43, 9348608), (62, 6483712), (64, 6281096), (76, 5289344), (86, 4674304), (124, 3241856), (128, 3140548), (152, 2644672), (172, 2337152), (248, 1620928), (256, 1570274), (304, 1322336), (344, 1168576), (496, 810464), (512, 785137), (589, 682496), (608, 661168), (688, 584288), (817, 492032), (961, 418304), (992, 405232), (1178, 341248), (1216, 330584), (1333, 301568), (1376, 292144), (1634, 246016), (1922, 209152), (1984, 202616), (2356, 170624), (2432, 165292), (2666, 150784), (2752, 146072), (3268, 123008), (3844, 104576), (3968, 101308), (4712, 85312), (4864, 82646), (5332, 75392), (5504, 73036), (6536, 61504), (7688, 52288), (7936, 50654), (9424, 42656), (9728, 41323), (10664, 37696), (11008, 36518), (13072, 30752), (15376, 26144), (15872, 25327), (18259, 22016), (18848, 21328)]