206801920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^2\times {\mathrm{239}}^1$

素因数の和:290

約数の個数: 132

約数和(自身を含む): 539425440

約数和(自身を除く): 332623520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 169, 208, 239, 256, 260, 320, 338, 416, 478, 512, 520, 640, 676, 832, 845, 956, 1024, 1040, 1195, 1280, 1352, 1664, 1690, 1912, 2080, 2390, 2560, 2704, 3107, 3328, 3380, 3824, 4160, 4780, 5120, 5408, 6214, 6656, 6760, 7648, 8320, 9560, 10816, 12428, 13312, 13520, 15296, 15535, 16640, 19120, 21632, 24856, 27040, 30592, 31070, 33280, 38240, 40391, 43264, 49712, 54080, 61184, 62140, 66560, 76480, 80782, 86528, 99424, 108160, 122368, 124280, 152960, 161564, 173056, 198848, 201955, 216320, 244736, 248560, 305920, 323128, 397696, 403910, 432640, 497120, 611840, 646256, 795392, 807820, 865280, 994240, 1223680, 1292512, 1590784, 1615640, 1988480, 2585024, 3181568, 3231280, 3976960, 5170048, 6462560, 7953920, 10340096, 12925120, 15907840, 20680192, 25850240, 41360384, 51700480, 103400960, 206801920]

約数ペア:

[(1, 206801920), (2, 103400960), (4, 51700480), (5, 41360384), (8, 25850240), (10, 20680192), (13, 15907840), (16, 12925120), (20, 10340096), (26, 7953920), (32, 6462560), (40, 5170048), (52, 3976960), (64, 3231280), (65, 3181568), (80, 2585024), (104, 1988480), (128, 1615640), (130, 1590784), (160, 1292512), (169, 1223680), (208, 994240), (239, 865280), (256, 807820), (260, 795392), (320, 646256), (338, 611840), (416, 497120), (478, 432640), (512, 403910), (520, 397696), (640, 323128), (676, 305920), (832, 248560), (845, 244736), (956, 216320), (1024, 201955), (1040, 198848), (1195, 173056), (1280, 161564), (1352, 152960), (1664, 124280), (1690, 122368), (1912, 108160), (2080, 99424), (2390, 86528), (2560, 80782), (2704, 76480), (3107, 66560), (3328, 62140), (3380, 61184), (3824, 54080), (4160, 49712), (4780, 43264), (5120, 40391), (5408, 38240), (6214, 33280), (6656, 31070), (6760, 30592), (7648, 27040), (8320, 24856), (9560, 21632), (10816, 19120), (12428, 16640), (13312, 15535), (13520, 15296)]