281579480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:338

約数の個数: 192

約数和(自身を含む): 815300640

約数和(自身を除く): 533721160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 43, 49, 52, 56, 65, 70, 86, 91, 98, 104, 130, 140, 172, 182, 196, 215, 245, 257, 260, 280, 301, 344, 364, 392, 430, 455, 490, 514, 520, 559, 602, 637, 728, 860, 910, 980, 1028, 1118, 1204, 1274, 1285, 1505, 1720, 1799, 1820, 1960, 2056, 2107, 2236, 2408, 2548, 2570, 2795, 3010, 3185, 3341, 3598, 3640, 3913, 4214, 4472, 5096, 5140, 5590, 6020, 6370, 6682, 7196, 7826, 8428, 8995, 10280, 10535, 11051, 11180, 12040, 12593, 12740, 13364, 14392, 15652, 16705, 16856, 17990, 19565, 21070, 22102, 22360, 23387, 25186, 25480, 26728, 27391, 31304, 33410, 35980, 39130, 42140, 44204, 46774, 50372, 54782, 55255, 62965, 66820, 71960, 77357, 78260, 84280, 88408, 93548, 100744, 109564, 110510, 116935, 125930, 133640, 136955, 143663, 154714, 156520, 163709, 187096, 219128, 221020, 233870, 251860, 273910, 287326, 309428, 327418, 386785, 442040, 467740, 503720, 541499, 547820, 574652, 618856, 654836, 718315, 773570, 818545, 935480, 1005641, 1082998, 1095640, 1149304, 1309672, 1436630, 1547140, 1637090, 2011282, 2165996, 2707495, 2873260, 3094280, 3274180, 4022564, 4331992, 5028205, 5414990, 5746520, 6548360, 7039487, 8045128, 10056410, 10829980, 14078974, 20112820, 21659960, 28157948, 35197435, 40225640, 56315896, 70394870, 140789740, 281579480]

約数ペア:

[(1, 281579480), (2, 140789740), (4, 70394870), (5, 56315896), (7, 40225640), (8, 35197435), (10, 28157948), (13, 21659960), (14, 20112820), (20, 14078974), (26, 10829980), (28, 10056410), (35, 8045128), (40, 7039487), (43, 6548360), (49, 5746520), (52, 5414990), (56, 5028205), (65, 4331992), (70, 4022564), (86, 3274180), (91, 3094280), (98, 2873260), (104, 2707495), (130, 2165996), (140, 2011282), (172, 1637090), (182, 1547140), (196, 1436630), (215, 1309672), (245, 1149304), (257, 1095640), (260, 1082998), (280, 1005641), (301, 935480), (344, 818545), (364, 773570), (392, 718315), (430, 654836), (455, 618856), (490, 574652), (514, 547820), (520, 541499), (559, 503720), (602, 467740), (637, 442040), (728, 386785), (860, 327418), (910, 309428), (980, 287326), (1028, 273910), (1118, 251860), (1204, 233870), (1274, 221020), (1285, 219128), (1505, 187096), (1720, 163709), (1799, 156520), (1820, 154714), (1960, 143663), (2056, 136955), (2107, 133640), (2236, 125930), (2408, 116935), (2548, 110510), (2570, 109564), (2795, 100744), (3010, 93548), (3185, 88408), (3341, 84280), (3598, 78260), (3640, 77357), (3913, 71960), (4214, 66820), (4472, 62965), (5096, 55255), (5140, 54782), (5590, 50372), (6020, 46774), (6370, 44204), (6682, 42140), (7196, 39130), (7826, 35980), (8428, 33410), (8995, 31304), (10280, 27391), (10535, 26728), (11051, 25480), (11180, 25186), (12040, 23387), (12593, 22360), (12740, 22102), (13364, 21070), (14392, 19565), (15652, 17990), (16705, 16856)]