198688520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:267

約数の個数: 128

約数和(自身を含む): 498636000

約数和(自身を除く): 299947480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 37, 40, 53, 68, 74, 85, 106, 136, 148, 149, 170, 185, 212, 265, 296, 298, 340, 370, 424, 530, 596, 629, 680, 740, 745, 901, 1060, 1192, 1258, 1480, 1490, 1802, 1961, 2120, 2516, 2533, 2980, 3145, 3604, 3922, 4505, 5032, 5066, 5513, 5960, 6290, 7208, 7844, 7897, 9010, 9805, 10132, 11026, 12580, 12665, 15688, 15794, 18020, 19610, 20264, 22052, 25160, 25330, 27565, 31588, 33337, 36040, 39220, 39485, 44104, 50660, 55130, 63176, 66674, 78440, 78970, 93721, 101320, 110260, 133348, 134249, 157940, 166685, 187442, 220520, 266696, 268498, 292189, 315880, 333370, 374884, 468605, 536996, 584378, 666740, 671245, 749768, 937210, 1073992, 1168756, 1333480, 1342490, 1460945, 1874420, 2337512, 2684980, 2921890, 3748840, 4967213, 5369960, 5843780, 9934426, 11687560, 19868852, 24836065, 39737704, 49672130, 99344260, 198688520]

約数ペア:

[(1, 198688520), (2, 99344260), (4, 49672130), (5, 39737704), (8, 24836065), (10, 19868852), (17, 11687560), (20, 9934426), (34, 5843780), (37, 5369960), (40, 4967213), (53, 3748840), (68, 2921890), (74, 2684980), (85, 2337512), (106, 1874420), (136, 1460945), (148, 1342490), (149, 1333480), (170, 1168756), (185, 1073992), (212, 937210), (265, 749768), (296, 671245), (298, 666740), (340, 584378), (370, 536996), (424, 468605), (530, 374884), (596, 333370), (629, 315880), (680, 292189), (740, 268498), (745, 266696), (901, 220520), (1060, 187442), (1192, 166685), (1258, 157940), (1480, 134249), (1490, 133348), (1802, 110260), (1961, 101320), (2120, 93721), (2516, 78970), (2533, 78440), (2980, 66674), (3145, 63176), (3604, 55130), (3922, 50660), (4505, 44104), (5032, 39485), (5066, 39220), (5513, 36040), (5960, 33337), (6290, 31588), (7208, 27565), (7844, 25330), (7897, 25160), (9010, 22052), (9805, 20264), (10132, 19610), (11026, 18020), (12580, 15794), (12665, 15688)]