21078120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1091}}^1$

素因数の和:1135

約数の個数: 128

約数和(自身を含む): 75479040

約数和(自身を除く): 54400920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 552, 644, 690, 805, 840, 920, 966, 1091, 1288, 1380, 1610, 1932, 2182, 2415, 2760, 3220, 3273, 3864, 4364, 4830, 5455, 6440, 6546, 7637, 8728, 9660, 10910, 13092, 15274, 16365, 19320, 21820, 22911, 25093, 26184, 30548, 32730, 38185, 43640, 45822, 50186, 61096, 65460, 75279, 76370, 91644, 100372, 114555, 125465, 130920, 150558, 152740, 175651, 183288, 200744, 229110, 250930, 301116, 305480, 351302, 376395, 458220, 501860, 526953, 602232, 702604, 752790, 878255, 916440, 1003720, 1053906, 1405208, 1505580, 1756510, 2107812, 2634765, 3011160, 3513020, 4215624, 5269530, 7026040, 10539060, 21078120]

約数ペア:

[(1, 21078120), (2, 10539060), (3, 7026040), (4, 5269530), (5, 4215624), (6, 3513020), (7, 3011160), (8, 2634765), (10, 2107812), (12, 1756510), (14, 1505580), (15, 1405208), (20, 1053906), (21, 1003720), (23, 916440), (24, 878255), (28, 752790), (30, 702604), (35, 602232), (40, 526953), (42, 501860), (46, 458220), (56, 376395), (60, 351302), (69, 305480), (70, 301116), (84, 250930), (92, 229110), (105, 200744), (115, 183288), (120, 175651), (138, 152740), (140, 150558), (161, 130920), (168, 125465), (184, 114555), (210, 100372), (230, 91644), (276, 76370), (280, 75279), (322, 65460), (345, 61096), (420, 50186), (460, 45822), (483, 43640), (552, 38185), (644, 32730), (690, 30548), (805, 26184), (840, 25093), (920, 22911), (966, 21820), (1091, 19320), (1288, 16365), (1380, 15274), (1610, 13092), (1932, 10910), (2182, 9660), (2415, 8728), (2760, 7637), (3220, 6546), (3273, 6440), (3864, 5455), (4364, 4830)]