205421996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:439

約数の個数: 72

約数和(自身を含む): 422964864

約数和(自身を除く): 217542868

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 52, 62, 76, 124, 247, 353, 361, 403, 494, 589, 706, 722, 806, 988, 1178, 1412, 1444, 1612, 2356, 4589, 4693, 6707, 7657, 9178, 9386, 10943, 11191, 13414, 15314, 18356, 18772, 21886, 22382, 26828, 30628, 43772, 44764, 87191, 127433, 142259, 145483, 174382, 207917, 254866, 284518, 290966, 348764, 415834, 509732, 569036, 581932, 831668, 1656629, 2702921, 3313258, 3950423, 5405842, 6626516, 7900846, 10811684, 15801692, 51355499, 102710998, 205421996]

約数ペア:

[(1, 205421996), (2, 102710998), (4, 51355499), (13, 15801692), (19, 10811684), (26, 7900846), (31, 6626516), (38, 5405842), (52, 3950423), (62, 3313258), (76, 2702921), (124, 1656629), (247, 831668), (353, 581932), (361, 569036), (403, 509732), (494, 415834), (589, 348764), (706, 290966), (722, 284518), (806, 254866), (988, 207917), (1178, 174382), (1412, 145483), (1444, 142259), (1612, 127433), (2356, 87191), (4589, 44764), (4693, 43772), (6707, 30628), (7657, 26828), (9178, 22382), (9386, 21886), (10943, 18772), (11191, 18356), (13414, 15314)]