21351660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:224

約数の個数: 144

約数和(自身を含む): 69981408

約数和(自身を除く): 48629748

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 17, 20, 22, 30, 33, 34, 44, 51, 55, 60, 66, 68, 85, 102, 110, 121, 132, 165, 170, 173, 187, 204, 220, 242, 255, 330, 340, 346, 363, 374, 484, 510, 519, 561, 605, 660, 692, 726, 748, 865, 935, 1020, 1038, 1122, 1210, 1452, 1730, 1815, 1870, 1903, 2057, 2076, 2244, 2420, 2595, 2805, 2941, 3460, 3630, 3740, 3806, 4114, 5190, 5610, 5709, 5882, 6171, 7260, 7612, 8228, 8823, 9515, 10285, 10380, 11220, 11418, 11764, 12342, 14705, 17646, 19030, 20570, 20933, 22836, 24684, 28545, 29410, 30855, 32351, 35292, 38060, 41140, 41866, 44115, 57090, 58820, 61710, 62799, 64702, 83732, 88230, 97053, 104665, 114180, 123420, 125598, 129404, 161755, 176460, 194106, 209330, 251196, 313995, 323510, 355861, 388212, 418660, 485265, 627990, 647020, 711722, 970530, 1067583, 1255980, 1423444, 1779305, 1941060, 2135166, 3558610, 4270332, 5337915, 7117220, 10675830, 21351660]

約数ペア:

[(1, 21351660), (2, 10675830), (3, 7117220), (4, 5337915), (5, 4270332), (6, 3558610), (10, 2135166), (11, 1941060), (12, 1779305), (15, 1423444), (17, 1255980), (20, 1067583), (22, 970530), (30, 711722), (33, 647020), (34, 627990), (44, 485265), (51, 418660), (55, 388212), (60, 355861), (66, 323510), (68, 313995), (85, 251196), (102, 209330), (110, 194106), (121, 176460), (132, 161755), (165, 129404), (170, 125598), (173, 123420), (187, 114180), (204, 104665), (220, 97053), (242, 88230), (255, 83732), (330, 64702), (340, 62799), (346, 61710), (363, 58820), (374, 57090), (484, 44115), (510, 41866), (519, 41140), (561, 38060), (605, 35292), (660, 32351), (692, 30855), (726, 29410), (748, 28545), (865, 24684), (935, 22836), (1020, 20933), (1038, 20570), (1122, 19030), (1210, 17646), (1452, 14705), (1730, 12342), (1815, 11764), (1870, 11418), (1903, 11220), (2057, 10380), (2076, 10285), (2244, 9515), (2420, 8823), (2595, 8228), (2805, 7612), (2941, 7260), (3460, 6171), (3630, 5882), (3740, 5709), (3806, 5610), (4114, 5190)]