21328560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2693}}^1$

素因数の和:2723

約数の個数: 120

約数和(自身を含む): 78169104

約数和(自身を除く): 56840544

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2640, 2693, 3960, 5386, 7920, 8079, 10772, 13465, 16158, 21544, 24237, 26930, 29623, 32316, 40395, 43088, 48474, 53860, 59246, 64632, 80790, 88869, 96948, 107720, 118492, 121185, 129264, 148115, 161580, 177738, 193896, 215440, 236984, 242370, 266607, 296230, 323160, 355476, 387792, 444345, 473968, 484740, 533214, 592460, 646320, 710952, 888690, 969480, 1066428, 1184920, 1333035, 1421904, 1777380, 1938960, 2132856, 2369840, 2666070, 3554760, 4265712, 5332140, 7109520, 10664280, 21328560]

約数ペア:

[(1, 21328560), (2, 10664280), (3, 7109520), (4, 5332140), (5, 4265712), (6, 3554760), (8, 2666070), (9, 2369840), (10, 2132856), (11, 1938960), (12, 1777380), (15, 1421904), (16, 1333035), (18, 1184920), (20, 1066428), (22, 969480), (24, 888690), (30, 710952), (33, 646320), (36, 592460), (40, 533214), (44, 484740), (45, 473968), (48, 444345), (55, 387792), (60, 355476), (66, 323160), (72, 296230), (80, 266607), (88, 242370), (90, 236984), (99, 215440), (110, 193896), (120, 177738), (132, 161580), (144, 148115), (165, 129264), (176, 121185), (180, 118492), (198, 107720), (220, 96948), (240, 88869), (264, 80790), (330, 64632), (360, 59246), (396, 53860), (440, 48474), (495, 43088), (528, 40395), (660, 32316), (720, 29623), (792, 26930), (880, 24237), (990, 21544), (1320, 16158), (1584, 13465), (1980, 10772), (2640, 8079), (2693, 7920), (3960, 5386)]