311609872

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{487}}^1$

素因数の和:728

約数の個数: 80

約数和(自身を含む): 718882560

約数和(自身を除く): 407272688

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 112, 116, 197, 203, 232, 394, 406, 464, 487, 788, 812, 974, 1379, 1576, 1624, 1948, 2758, 3152, 3248, 3409, 3896, 5516, 5713, 6818, 7792, 11032, 11426, 13636, 14123, 22064, 22852, 27272, 28246, 39991, 45704, 54544, 56492, 79982, 91408, 95939, 98861, 112984, 159964, 191878, 197722, 225968, 319928, 383756, 395444, 639856, 671573, 767512, 790888, 1343146, 1535024, 1581776, 2686292, 2782231, 5372584, 5564462, 10745168, 11128924, 19475617, 22257848, 38951234, 44515696, 77902468, 155804936, 311609872]

約数ペア:

[(1, 311609872), (2, 155804936), (4, 77902468), (7, 44515696), (8, 38951234), (14, 22257848), (16, 19475617), (28, 11128924), (29, 10745168), (56, 5564462), (58, 5372584), (112, 2782231), (116, 2686292), (197, 1581776), (203, 1535024), (232, 1343146), (394, 790888), (406, 767512), (464, 671573), (487, 639856), (788, 395444), (812, 383756), (974, 319928), (1379, 225968), (1576, 197722), (1624, 191878), (1948, 159964), (2758, 112984), (3152, 98861), (3248, 95939), (3409, 91408), (3896, 79982), (5516, 56492), (5713, 54544), (6818, 45704), (7792, 39991), (11032, 28246), (11426, 27272), (13636, 22852), (14123, 22064)]