398900280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{661}}^1$

素因数の和:829

約数の個数: 128

約数和(自身を含む): 1235450880

約数和(自身を除く): 836550600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 60, 94, 107, 120, 141, 188, 214, 235, 282, 321, 376, 428, 470, 535, 564, 642, 661, 705, 856, 940, 1070, 1128, 1284, 1322, 1410, 1605, 1880, 1983, 2140, 2568, 2644, 2820, 3210, 3305, 3966, 4280, 5029, 5288, 5640, 6420, 6610, 7932, 9915, 10058, 12840, 13220, 15087, 15864, 19830, 20116, 25145, 26440, 30174, 31067, 39660, 40232, 50290, 60348, 62134, 70727, 75435, 79320, 93201, 100580, 120696, 124268, 141454, 150870, 155335, 186402, 201160, 212181, 248536, 282908, 301740, 310670, 353635, 372804, 424362, 466005, 565816, 603480, 621340, 707270, 745608, 848724, 932010, 1060905, 1242680, 1414540, 1697448, 1864020, 2121810, 2829080, 3324169, 3728040, 4243620, 6648338, 8487240, 9972507, 13296676, 16620845, 19945014, 26593352, 33241690, 39890028, 49862535, 66483380, 79780056, 99725070, 132966760, 199450140, 398900280]

約数ペア:

[(1, 398900280), (2, 199450140), (3, 132966760), (4, 99725070), (5, 79780056), (6, 66483380), (8, 49862535), (10, 39890028), (12, 33241690), (15, 26593352), (20, 19945014), (24, 16620845), (30, 13296676), (40, 9972507), (47, 8487240), (60, 6648338), (94, 4243620), (107, 3728040), (120, 3324169), (141, 2829080), (188, 2121810), (214, 1864020), (235, 1697448), (282, 1414540), (321, 1242680), (376, 1060905), (428, 932010), (470, 848724), (535, 745608), (564, 707270), (642, 621340), (661, 603480), (705, 565816), (856, 466005), (940, 424362), (1070, 372804), (1128, 353635), (1284, 310670), (1322, 301740), (1410, 282908), (1605, 248536), (1880, 212181), (1983, 201160), (2140, 186402), (2568, 155335), (2644, 150870), (2820, 141454), (3210, 124268), (3305, 120696), (3966, 100580), (4280, 93201), (5029, 79320), (5288, 75435), (5640, 70727), (6420, 62134), (6610, 60348), (7932, 50290), (9915, 40232), (10058, 39660), (12840, 31067), (13220, 30174), (15087, 26440), (15864, 25145), (19830, 20116)]