20025180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{691}}^1$

素因数の和:736

約数の個数: 144

約数和(自身を含む): 72543744

約数和(自身を除く): 52518564

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 28, 30, 35, 36, 42, 45, 46, 60, 63, 69, 70, 84, 90, 92, 105, 115, 126, 138, 140, 161, 180, 207, 210, 230, 252, 276, 315, 322, 345, 414, 420, 460, 483, 630, 644, 690, 691, 805, 828, 966, 1035, 1260, 1380, 1382, 1449, 1610, 1932, 2070, 2073, 2415, 2764, 2898, 3220, 3455, 4140, 4146, 4830, 4837, 5796, 6219, 6910, 7245, 8292, 9660, 9674, 10365, 12438, 13820, 14490, 14511, 15893, 19348, 20730, 24185, 24876, 28980, 29022, 31095, 31786, 41460, 43533, 47679, 48370, 58044, 62190, 63572, 72555, 79465, 87066, 95358, 96740, 111251, 124380, 143037, 145110, 158930, 174132, 190716, 217665, 222502, 238395, 286074, 290220, 317860, 333753, 435330, 445004, 476790, 556255, 572148, 667506, 715185, 870660, 953580, 1001259, 1112510, 1335012, 1430370, 1668765, 2002518, 2225020, 2860740, 3337530, 4005036, 5006295, 6675060, 10012590, 20025180]

約数ペア:

[(1, 20025180), (2, 10012590), (3, 6675060), (4, 5006295), (5, 4005036), (6, 3337530), (7, 2860740), (9, 2225020), (10, 2002518), (12, 1668765), (14, 1430370), (15, 1335012), (18, 1112510), (20, 1001259), (21, 953580), (23, 870660), (28, 715185), (30, 667506), (35, 572148), (36, 556255), (42, 476790), (45, 445004), (46, 435330), (60, 333753), (63, 317860), (69, 290220), (70, 286074), (84, 238395), (90, 222502), (92, 217665), (105, 190716), (115, 174132), (126, 158930), (138, 145110), (140, 143037), (161, 124380), (180, 111251), (207, 96740), (210, 95358), (230, 87066), (252, 79465), (276, 72555), (315, 63572), (322, 62190), (345, 58044), (414, 48370), (420, 47679), (460, 43533), (483, 41460), (630, 31786), (644, 31095), (690, 29022), (691, 28980), (805, 24876), (828, 24185), (966, 20730), (1035, 19348), (1260, 15893), (1380, 14511), (1382, 14490), (1449, 13820), (1610, 12438), (1932, 10365), (2070, 9674), (2073, 9660), (2415, 8292), (2764, 7245), (2898, 6910), (3220, 6219), (3455, 5796), (4140, 4837), (4146, 4830)]