19989007040

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{7817}}^1$

素因数の和:8026

約数の個数: 112

約数和(自身を含む): 48754674144

約数和(自身を除く): 28765667104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 131, 160, 244, 262, 305, 320, 488, 524, 610, 655, 976, 1048, 1220, 1310, 1952, 2096, 2440, 2620, 3904, 4192, 4880, 5240, 7817, 7991, 8384, 9760, 10480, 15634, 15982, 19520, 20960, 31268, 31964, 39085, 39955, 41920, 62536, 63928, 78170, 79910, 125072, 127856, 156340, 159820, 250144, 255712, 312680, 319640, 476837, 500288, 511424, 625360, 639280, 953674, 1024027, 1250720, 1278560, 1907348, 2048054, 2384185, 2501440, 2557120, 3814696, 4096108, 4768370, 5120135, 7629392, 8192216, 9536740, 10240270, 15258784, 16384432, 19073480, 20480540, 30517568, 32768864, 38146960, 40961080, 62465647, 65537728, 76293920, 81922160, 124931294, 152587840, 163844320, 249862588, 312328235, 327688640, 499725176, 624656470, 999450352, 1249312940, 1998900704, 2498625880, 3997801408, 4997251760, 9994503520, 19989007040]

約数ペア:

[(1, 19989007040), (2, 9994503520), (4, 4997251760), (5, 3997801408), (8, 2498625880), (10, 1998900704), (16, 1249312940), (20, 999450352), (32, 624656470), (40, 499725176), (61, 327688640), (64, 312328235), (80, 249862588), (122, 163844320), (131, 152587840), (160, 124931294), (244, 81922160), (262, 76293920), (305, 65537728), (320, 62465647), (488, 40961080), (524, 38146960), (610, 32768864), (655, 30517568), (976, 20480540), (1048, 19073480), (1220, 16384432), (1310, 15258784), (1952, 10240270), (2096, 9536740), (2440, 8192216), (2620, 7629392), (3904, 5120135), (4192, 4768370), (4880, 4096108), (5240, 3814696), (7817, 2557120), (7991, 2501440), (8384, 2384185), (9760, 2048054), (10480, 1907348), (15634, 1278560), (15982, 1250720), (19520, 1024027), (20960, 953674), (31268, 639280), (31964, 625360), (39085, 511424), (39955, 500288), (41920, 476837), (62536, 319640), (63928, 312680), (78170, 255712), (79910, 250144), (125072, 159820), (127856, 156340)]