20187268480

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{827}}^1\times {\mathrm{887}}^1$

素因数の和:1776

約数の個数: 128

約数和(自身を含む): 49497972480

約数和(自身を除く): 29310704000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 320, 344, 430, 640, 688, 827, 860, 887, 1376, 1654, 1720, 1774, 2752, 3308, 3440, 3548, 4135, 4435, 5504, 6616, 6880, 7096, 8270, 8870, 13232, 13760, 14192, 16540, 17740, 26464, 27520, 28384, 33080, 35480, 35561, 38141, 52928, 56768, 66160, 70960, 71122, 76282, 105856, 113536, 132320, 141920, 142244, 152564, 177805, 190705, 264640, 283840, 284488, 305128, 355610, 381410, 529280, 567680, 568976, 610256, 711220, 733549, 762820, 1137952, 1220512, 1422440, 1467098, 1525640, 2275904, 2441024, 2844880, 2934196, 3051280, 3667745, 4551808, 4882048, 5689760, 5868392, 6102560, 7335490, 11379520, 11736784, 12205120, 14670980, 22759040, 23473568, 24410240, 29341960, 31542607, 46947136, 58683920, 63085214, 93894272, 117367840, 126170428, 157713035, 234735680, 252340856, 315426070, 469471360, 504681712, 630852140, 1009363424, 1261704280, 2018726848, 2523408560, 4037453696, 5046817120, 10093634240, 20187268480]

約数ペア:

[(1, 20187268480), (2, 10093634240), (4, 5046817120), (5, 4037453696), (8, 2523408560), (10, 2018726848), (16, 1261704280), (20, 1009363424), (32, 630852140), (40, 504681712), (43, 469471360), (64, 315426070), (80, 252340856), (86, 234735680), (128, 157713035), (160, 126170428), (172, 117367840), (215, 93894272), (320, 63085214), (344, 58683920), (430, 46947136), (640, 31542607), (688, 29341960), (827, 24410240), (860, 23473568), (887, 22759040), (1376, 14670980), (1654, 12205120), (1720, 11736784), (1774, 11379520), (2752, 7335490), (3308, 6102560), (3440, 5868392), (3548, 5689760), (4135, 4882048), (4435, 4551808), (5504, 3667745), (6616, 3051280), (6880, 2934196), (7096, 2844880), (8270, 2441024), (8870, 2275904), (13232, 1525640), (13760, 1467098), (14192, 1422440), (16540, 1220512), (17740, 1137952), (26464, 762820), (27520, 733549), (28384, 711220), (33080, 610256), (35480, 568976), (35561, 567680), (38141, 529280), (52928, 381410), (56768, 355610), (66160, 305128), (70960, 284488), (71122, 283840), (76282, 264640), (105856, 190705), (113536, 177805), (132320, 152564), (141920, 142244)]