21702120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:467

約数の個数: 128

約数和(自身を含む): 72938880

約数和(自身を除く): 51236760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 41, 44, 55, 60, 66, 82, 88, 110, 120, 123, 132, 164, 165, 205, 220, 246, 264, 328, 330, 401, 410, 440, 451, 492, 615, 660, 802, 820, 902, 984, 1203, 1230, 1320, 1353, 1604, 1640, 1804, 2005, 2255, 2406, 2460, 2706, 3208, 3608, 4010, 4411, 4510, 4812, 4920, 5412, 6015, 6765, 8020, 8822, 9020, 9624, 10824, 12030, 13233, 13530, 16040, 16441, 17644, 18040, 22055, 24060, 26466, 27060, 32882, 35288, 44110, 48120, 49323, 52932, 54120, 65764, 66165, 82205, 88220, 98646, 105864, 131528, 132330, 164410, 176440, 180851, 197292, 246615, 264660, 328820, 361702, 394584, 493230, 529320, 542553, 657640, 723404, 904255, 986460, 1085106, 1446808, 1808510, 1972920, 2170212, 2712765, 3617020, 4340424, 5425530, 7234040, 10851060, 21702120]

約数ペア:

[(1, 21702120), (2, 10851060), (3, 7234040), (4, 5425530), (5, 4340424), (6, 3617020), (8, 2712765), (10, 2170212), (11, 1972920), (12, 1808510), (15, 1446808), (20, 1085106), (22, 986460), (24, 904255), (30, 723404), (33, 657640), (40, 542553), (41, 529320), (44, 493230), (55, 394584), (60, 361702), (66, 328820), (82, 264660), (88, 246615), (110, 197292), (120, 180851), (123, 176440), (132, 164410), (164, 132330), (165, 131528), (205, 105864), (220, 98646), (246, 88220), (264, 82205), (328, 66165), (330, 65764), (401, 54120), (410, 52932), (440, 49323), (451, 48120), (492, 44110), (615, 35288), (660, 32882), (802, 27060), (820, 26466), (902, 24060), (984, 22055), (1203, 18040), (1230, 17644), (1320, 16441), (1353, 16040), (1604, 13530), (1640, 13233), (1804, 12030), (2005, 10824), (2255, 9624), (2406, 9020), (2460, 8822), (2706, 8020), (3208, 6765), (3608, 6015), (4010, 5412), (4411, 4920), (4510, 4812)]