21465840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:247

約数の個数: 160

約数和(自身を含む): 74566656

約数和(自身を除く): 53100816

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 47, 48, 55, 60, 66, 80, 88, 94, 110, 120, 132, 141, 165, 173, 176, 188, 220, 235, 240, 264, 282, 330, 346, 376, 440, 470, 517, 519, 528, 564, 660, 692, 705, 752, 865, 880, 940, 1034, 1038, 1128, 1320, 1384, 1410, 1551, 1730, 1880, 1903, 2068, 2076, 2256, 2585, 2595, 2640, 2768, 2820, 3102, 3460, 3760, 3806, 4136, 4152, 5170, 5190, 5640, 5709, 6204, 6920, 7612, 7755, 8131, 8272, 8304, 9515, 10340, 10380, 11280, 11418, 12408, 13840, 15224, 15510, 16262, 19030, 20680, 20760, 22836, 24393, 24816, 28545, 30448, 31020, 32524, 38060, 40655, 41360, 41520, 45672, 48786, 57090, 62040, 65048, 76120, 81310, 89441, 91344, 97572, 114180, 121965, 124080, 130096, 152240, 162620, 178882, 195144, 228360, 243930, 268323, 325240, 357764, 390288, 447205, 456720, 487860, 536646, 650480, 715528, 894410, 975720, 1073292, 1341615, 1431056, 1788820, 1951440, 2146584, 2683230, 3577640, 4293168, 5366460, 7155280, 10732920, 21465840]

約数ペア:

[(1, 21465840), (2, 10732920), (3, 7155280), (4, 5366460), (5, 4293168), (6, 3577640), (8, 2683230), (10, 2146584), (11, 1951440), (12, 1788820), (15, 1431056), (16, 1341615), (20, 1073292), (22, 975720), (24, 894410), (30, 715528), (33, 650480), (40, 536646), (44, 487860), (47, 456720), (48, 447205), (55, 390288), (60, 357764), (66, 325240), (80, 268323), (88, 243930), (94, 228360), (110, 195144), (120, 178882), (132, 162620), (141, 152240), (165, 130096), (173, 124080), (176, 121965), (188, 114180), (220, 97572), (235, 91344), (240, 89441), (264, 81310), (282, 76120), (330, 65048), (346, 62040), (376, 57090), (440, 48786), (470, 45672), (517, 41520), (519, 41360), (528, 40655), (564, 38060), (660, 32524), (692, 31020), (705, 30448), (752, 28545), (865, 24816), (880, 24393), (940, 22836), (1034, 20760), (1038, 20680), (1128, 19030), (1320, 16262), (1384, 15510), (1410, 15224), (1551, 13840), (1730, 12408), (1880, 11418), (1903, 11280), (2068, 10380), (2076, 10340), (2256, 9515), (2585, 8304), (2595, 8272), (2640, 8131), (2768, 7755), (2820, 7612), (3102, 6920), (3460, 6204), (3760, 5709), (3806, 5640), (4136, 5190), (4152, 5170)]