28308721980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:247

約数の個数: 864

約数和(自身を含む): 111506927616

約数和(自身を除く): 83198205636

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 17, 20, 21, 22, 28, 30, 31, 33, 34, 35, 42, 44, 49, 51, 55, 60, 62, 66, 68, 70, 77, 84, 85, 93, 98, 102, 105, 110, 119, 121, 124, 132, 140, 147, 151, 154, 155, 165, 170, 186, 187, 196, 204, 210, 217, 220, 231, 238, 242, 245, 255, 294, 302, 308, 310, 330, 340, 341, 357, 363, 372, 374, 385, 420, 434, 453, 462, 465, 476, 484, 490, 510, 527, 539, 561, 588, 595, 604, 605, 620, 651, 660, 682, 714, 726, 735, 748, 755, 770, 833, 847, 868, 906, 924, 930, 935, 980, 1020, 1023, 1054, 1057, 1078, 1085, 1122, 1155, 1190, 1210, 1302, 1309, 1364, 1428, 1452, 1470, 1510, 1519, 1540, 1581, 1617, 1661, 1666, 1694, 1705, 1785, 1812, 1815, 1860, 1870, 2046, 2057, 2108, 2114, 2156, 2170, 2244, 2265, 2310, 2380, 2387, 2420, 2499, 2541, 2567, 2604, 2618, 2635, 2695, 2805, 2940, 3020, 3038, 3162, 3171, 3234, 3255, 3322, 3332, 3388, 3410, 3570, 3630, 3689, 3740, 3751, 3927, 4092, 4114, 4165, 4228, 4235, 4340, 4530, 4557, 4620, 4681, 4774, 4983, 4998, 5082, 5115, 5134, 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約数ペア:

[(1, 28308721980), (2, 14154360990), (3, 9436240660), (4, 7077180495), (5, 5661744396), (6, 4718120330), (7, 4044103140), (10, 2830872198), (11, 2573520180), (12, 2359060165), (14, 2022051570), (15, 1887248132), (17, 1665218940), (20, 1415436099), (21, 1348034380), (22, 1286760090), (28, 1011025785), (30, 943624066), (31, 913184580), (33, 857840060), (34, 832609470), (35, 808820628), (42, 674017190), (44, 643380045), (49, 577729020), (51, 555072980), (55, 514704036), (60, 471812033), (62, 456592290), (66, 428920030), (68, 416304735), (70, 404410314), (77, 367645740), (84, 337008595), (85, 333043788), (93, 304394860), (98, 288864510), (102, 277536490), (105, 269606876), (110, 257352018), (119, 237888420), (121, 233956380), (124, 228296145), (132, 214460015), (140, 202205157), (147, 192576340), (151, 187474980), (154, 183822870), (155, 182636916), (165, 171568012), (170, 166521894), (186, 152197430), (187, 151383540), (196, 144432255), (204, 138768245), (210, 134803438), (217, 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(109956, 257455), (110670, 255794), (110985, 255068), (112530, 251566), (112948, 250635), (115940, 244167), (116270, 243474), (118580, 238731), (121737, 232540), (123420, 229369), (125783, 225060), (127534, 221970), (127897, 221340), (129115, 219252), (131068, 215985), (131285, 215628), (137445, 205964), (139524, 202895), (140430, 201586), (141185, 200508), (143220, 197659), (143990, 196602), (147980, 191301), (154020, 183799), (154473, 183260), (154938, 182710), (157542, 179690), (159154, 177870), (162316, 174405), (162778, 173910), (163835, 172788), (167090, 169422)]