20457366100

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{1579}}^1$

素因数の和:1790

約数の個数: 144

約数和(自身を含む): 47791941120

約数和(自身を除く): 27334575020

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 43, 46, 50, 86, 92, 100, 115, 131, 172, 215, 230, 262, 430, 460, 524, 575, 655, 860, 989, 1075, 1150, 1310, 1579, 1978, 2150, 2300, 2620, 3013, 3158, 3275, 3956, 4300, 4945, 5633, 6026, 6316, 6550, 7895, 9890, 11266, 12052, 13100, 15065, 15790, 19780, 22532, 24725, 28165, 30130, 31580, 36317, 39475, 49450, 56330, 60260, 67897, 72634, 75325, 78950, 98900, 112660, 129559, 135794, 140825, 145268, 150650, 157900, 181585, 206849, 259118, 271588, 281650, 301300, 339485, 363170, 413698, 518236, 563300, 647795, 678970, 726340, 827396, 907925, 1034245, 1295590, 1357940, 1561631, 1697425, 1815850, 2068490, 2591180, 3123262, 3238975, 3394850, 3631700, 4136980, 4757527, 5171225, 6246524, 6477950, 6789700, 7808155, 8894507, 9515054, 10342450, 12955900, 15616310, 17789014, 19030108, 20684900, 23787635, 31232620, 35578028, 39040775, 44472535, 47575270, 78081550, 88945070, 95150540, 118938175, 156163100, 177890140, 204573661, 222362675, 237876350, 409147322, 444725350, 475752700, 818294644, 889450700, 1022868305, 2045736610, 4091473220, 5114341525, 10228683050, 20457366100]

約数ペア:

[(1, 20457366100), (2, 10228683050), (4, 5114341525), (5, 4091473220), (10, 2045736610), (20, 1022868305), (23, 889450700), (25, 818294644), (43, 475752700), (46, 444725350), (50, 409147322), (86, 237876350), (92, 222362675), (100, 204573661), (115, 177890140), (131, 156163100), (172, 118938175), (215, 95150540), (230, 88945070), (262, 78081550), (430, 47575270), (460, 44472535), (524, 39040775), (575, 35578028), (655, 31232620), (860, 23787635), (989, 20684900), (1075, 19030108), (1150, 17789014), (1310, 15616310), (1579, 12955900), (1978, 10342450), (2150, 9515054), (2300, 8894507), (2620, 7808155), (3013, 6789700), (3158, 6477950), (3275, 6246524), (3956, 5171225), (4300, 4757527), (4945, 4136980), (5633, 3631700), (6026, 3394850), (6316, 3238975), (6550, 3123262), (7895, 2591180), (9890, 2068490), (11266, 1815850), (12052, 1697425), (13100, 1561631), (15065, 1357940), (15790, 1295590), (19780, 1034245), (22532, 907925), (24725, 827396), (28165, 726340), (30130, 678970), (31580, 647795), (36317, 563300), (39475, 518236), (49450, 413698), (56330, 363170), (60260, 339485), (67897, 301300), (72634, 281650), (75325, 271588), (78950, 259118), (98900, 206849), (112660, 181585), (129559, 157900), (135794, 150650), (140825, 145268)]