261699520

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:139

約数の個数: 168

約数和(自身を含む): 690079392

約数和(自身を除く): 428379872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 37, 40, 46, 62, 64, 74, 80, 92, 115, 124, 148, 155, 160, 184, 185, 230, 248, 296, 310, 320, 368, 370, 460, 496, 592, 620, 713, 736, 740, 851, 920, 961, 992, 1147, 1184, 1240, 1426, 1472, 1480, 1702, 1840, 1922, 1984, 2294, 2368, 2480, 2852, 2960, 3404, 3565, 3680, 3844, 4255, 4588, 4805, 4960, 5704, 5735, 5920, 6808, 7130, 7360, 7688, 8510, 9176, 9610, 9920, 11408, 11470, 11840, 13616, 14260, 15376, 17020, 18352, 19220, 22103, 22816, 22940, 26381, 27232, 28520, 30752, 34040, 35557, 36704, 38440, 44206, 45632, 45880, 52762, 54464, 57040, 61504, 68080, 71114, 73408, 76880, 88412, 91760, 105524, 110515, 114080, 131905, 136160, 142228, 153760, 176824, 177785, 183520, 211048, 221030, 228160, 263810, 272320, 284456, 307520, 353648, 355570, 367040, 422096, 442060, 527620, 568912, 707296, 711140, 817811, 844192, 884120, 1055240, 1137824, 1414592, 1422280, 1635622, 1688384, 1768240, 2110480, 2275648, 2844560, 3271244, 3536480, 4089055, 4220960, 5689120, 6542488, 7072960, 8178110, 8441920, 11378240, 13084976, 16356220, 26169952, 32712440, 52339904, 65424880, 130849760, 261699520]

約数ペア:

[(1, 261699520), (2, 130849760), (4, 65424880), (5, 52339904), (8, 32712440), (10, 26169952), (16, 16356220), (20, 13084976), (23, 11378240), (31, 8441920), (32, 8178110), (37, 7072960), (40, 6542488), (46, 5689120), (62, 4220960), (64, 4089055), (74, 3536480), (80, 3271244), (92, 2844560), (115, 2275648), (124, 2110480), (148, 1768240), (155, 1688384), (160, 1635622), (184, 1422280), (185, 1414592), (230, 1137824), (248, 1055240), (296, 884120), (310, 844192), (320, 817811), (368, 711140), (370, 707296), (460, 568912), (496, 527620), (592, 442060), (620, 422096), (713, 367040), (736, 355570), (740, 353648), (851, 307520), (920, 284456), (961, 272320), (992, 263810), (1147, 228160), (1184, 221030), (1240, 211048), (1426, 183520), (1472, 177785), (1480, 176824), (1702, 153760), (1840, 142228), (1922, 136160), (1984, 131905), (2294, 114080), (2368, 110515), (2480, 105524), (2852, 91760), (2960, 88412), (3404, 76880), (3565, 73408), (3680, 71114), (3844, 68080), (4255, 61504), (4588, 57040), (4805, 54464), (4960, 52762), (5704, 45880), (5735, 45632), (5920, 44206), (6808, 38440), (7130, 36704), (7360, 35557), (7688, 34040), (8510, 30752), (9176, 28520), (9610, 27232), (9920, 26381), (11408, 22940), (11470, 22816), (11840, 22103), (13616, 19220), (14260, 18352), (15376, 17020)]