20175897560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{128903}}^1$

素因数の和:128977

約数の個数: 128

約数和(自身を含む): 57171502080

約数和(自身を除く): 36995604520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 43, 52, 56, 65, 70, 86, 91, 104, 130, 140, 172, 182, 215, 260, 280, 301, 344, 364, 430, 455, 520, 559, 602, 728, 860, 910, 1118, 1204, 1505, 1720, 1820, 2236, 2408, 2795, 3010, 3640, 3913, 4472, 5590, 6020, 7826, 11180, 12040, 15652, 19565, 22360, 31304, 39130, 78260, 128903, 156520, 257806, 515612, 644515, 902321, 1031224, 1289030, 1675739, 1804642, 2578060, 3351478, 3609284, 4511605, 5156120, 5542829, 6702956, 7218568, 8378695, 9023210, 11085658, 11730173, 13405912, 16757390, 18046420, 22171316, 23460346, 27714145, 33514780, 36092840, 38799803, 44342632, 46920692, 55428290, 58650865, 67029560, 72056777, 77599606, 93841384, 110856580, 117301730, 144113554, 155199212, 193999015, 221713160, 234603460, 288227108, 310398424, 360283885, 387998030, 469206920, 504397439, 576454216, 720567770, 775996060, 1008794878, 1441135540, 1551992120, 2017589756, 2521987195, 2882271080, 4035179512, 5043974390, 10087948780, 20175897560]

約数ペア:

[(1, 20175897560), (2, 10087948780), (4, 5043974390), (5, 4035179512), (7, 2882271080), (8, 2521987195), (10, 2017589756), (13, 1551992120), (14, 1441135540), (20, 1008794878), (26, 775996060), (28, 720567770), (35, 576454216), (40, 504397439), (43, 469206920), (52, 387998030), (56, 360283885), (65, 310398424), (70, 288227108), (86, 234603460), (91, 221713160), (104, 193999015), (130, 155199212), (140, 144113554), (172, 117301730), (182, 110856580), (215, 93841384), (260, 77599606), (280, 72056777), (301, 67029560), (344, 58650865), (364, 55428290), (430, 46920692), (455, 44342632), (520, 38799803), (559, 36092840), (602, 33514780), (728, 27714145), (860, 23460346), (910, 22171316), (1118, 18046420), (1204, 16757390), (1505, 13405912), (1720, 11730173), (1820, 11085658), (2236, 9023210), (2408, 8378695), (2795, 7218568), (3010, 6702956), (3640, 5542829), (3913, 5156120), (4472, 4511605), (5590, 3609284), (6020, 3351478), (7826, 2578060), (11180, 1804642), (12040, 1675739), (15652, 1289030), (19565, 1031224), (22360, 902321), (31304, 644515), (39130, 515612), (78260, 257806), (128903, 156520)]