123555320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:393

約数の個数: 128

約数和(自身を含む): 341055360

約数和(自身を除く): 217500040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 101, 119, 136, 140, 170, 202, 238, 257, 280, 340, 404, 476, 505, 514, 595, 680, 707, 808, 952, 1010, 1028, 1190, 1285, 1414, 1717, 1799, 2020, 2056, 2380, 2570, 2828, 3434, 3535, 3598, 4040, 4369, 4760, 5140, 5656, 6868, 7070, 7196, 8585, 8738, 8995, 10280, 12019, 13736, 14140, 14392, 17170, 17476, 17990, 21845, 24038, 25957, 28280, 30583, 34340, 34952, 35980, 43690, 48076, 51914, 60095, 61166, 68680, 71960, 87380, 96152, 103828, 120190, 122332, 129785, 152915, 174760, 181699, 207656, 240380, 244664, 259570, 305830, 363398, 441269, 480760, 519140, 611660, 726796, 882538, 908495, 1038280, 1223320, 1453592, 1765076, 1816990, 2206345, 3088883, 3530152, 3633980, 4412690, 6177766, 7267960, 8825380, 12355532, 15444415, 17650760, 24711064, 30888830, 61777660, 123555320]

約数ペア:

[(1, 123555320), (2, 61777660), (4, 30888830), (5, 24711064), (7, 17650760), (8, 15444415), (10, 12355532), (14, 8825380), (17, 7267960), (20, 6177766), (28, 4412690), (34, 3633980), (35, 3530152), (40, 3088883), (56, 2206345), (68, 1816990), (70, 1765076), (85, 1453592), (101, 1223320), (119, 1038280), (136, 908495), (140, 882538), (170, 726796), (202, 611660), (238, 519140), (257, 480760), (280, 441269), (340, 363398), (404, 305830), (476, 259570), (505, 244664), (514, 240380), (595, 207656), (680, 181699), (707, 174760), (808, 152915), (952, 129785), (1010, 122332), (1028, 120190), (1190, 103828), (1285, 96152), (1414, 87380), (1717, 71960), (1799, 68680), (2020, 61166), (2056, 60095), (2380, 51914), (2570, 48076), (2828, 43690), (3434, 35980), (3535, 34952), (3598, 34340), (4040, 30583), (4369, 28280), (4760, 25957), (5140, 24038), (5656, 21845), (6868, 17990), (7070, 17476), (7196, 17170), (8585, 14392), (8738, 14140), (8995, 13736), (10280, 12019)]