210340520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:499

約数の個数: 128

約数和(自身を含む): 545529600

約数和(自身を除く): 335189080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 43, 46, 52, 65, 86, 92, 104, 115, 130, 172, 184, 215, 230, 260, 299, 344, 409, 430, 460, 520, 559, 598, 818, 860, 920, 989, 1118, 1196, 1495, 1636, 1720, 1978, 2045, 2236, 2392, 2795, 2990, 3272, 3956, 4090, 4472, 4945, 5317, 5590, 5980, 7912, 8180, 9407, 9890, 10634, 11180, 11960, 12857, 16360, 17587, 18814, 19780, 21268, 22360, 25714, 26585, 35174, 37628, 39560, 42536, 47035, 51428, 53170, 64285, 70348, 75256, 87935, 94070, 102856, 106340, 122291, 128570, 140696, 175870, 188140, 212680, 228631, 244582, 257140, 351740, 376280, 404501, 457262, 489164, 514280, 611455, 703480, 809002, 914524, 978328, 1143155, 1222910, 1618004, 1829048, 2022505, 2286310, 2445820, 3236008, 4045010, 4572620, 4891640, 5258513, 8090020, 9145240, 10517026, 16180040, 21034052, 26292565, 42068104, 52585130, 105170260, 210340520]

約数ペア:

[(1, 210340520), (2, 105170260), (4, 52585130), (5, 42068104), (8, 26292565), (10, 21034052), (13, 16180040), (20, 10517026), (23, 9145240), (26, 8090020), (40, 5258513), (43, 4891640), (46, 4572620), (52, 4045010), (65, 3236008), (86, 2445820), (92, 2286310), (104, 2022505), (115, 1829048), (130, 1618004), (172, 1222910), (184, 1143155), (215, 978328), (230, 914524), (260, 809002), (299, 703480), (344, 611455), (409, 514280), (430, 489164), (460, 457262), (520, 404501), (559, 376280), (598, 351740), (818, 257140), (860, 244582), (920, 228631), (989, 212680), (1118, 188140), (1196, 175870), (1495, 140696), (1636, 128570), (1720, 122291), (1978, 106340), (2045, 102856), (2236, 94070), (2392, 87935), (2795, 75256), (2990, 70348), (3272, 64285), (3956, 53170), (4090, 51428), (4472, 47035), (4945, 42536), (5317, 39560), (5590, 37628), (5980, 35174), (7912, 26585), (8180, 25714), (9407, 22360), (9890, 21268), (10634, 19780), (11180, 18814), (11960, 17587), (12857, 16360)]