21165840

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:302

約数の個数: 160

約数和(自身を含む): 74995200

約数和(自身を除く): 53829360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 41, 45, 48, 54, 60, 72, 80, 82, 90, 108, 120, 123, 135, 144, 164, 180, 205, 216, 239, 240, 246, 270, 328, 360, 369, 410, 432, 478, 492, 540, 615, 656, 717, 720, 738, 820, 956, 984, 1080, 1107, 1195, 1230, 1434, 1476, 1640, 1845, 1912, 1968, 2151, 2160, 2214, 2390, 2460, 2868, 2952, 3280, 3585, 3690, 3824, 4302, 4428, 4780, 4920, 5535, 5736, 5904, 6453, 7170, 7380, 8604, 8856, 9560, 9799, 9840, 10755, 11070, 11472, 12906, 14340, 14760, 17208, 17712, 19120, 19598, 21510, 22140, 25812, 28680, 29397, 29520, 32265, 34416, 39196, 43020, 44280, 48995, 51624, 57360, 58794, 64530, 78392, 86040, 88191, 88560, 97990, 103248, 117588, 129060, 146985, 156784, 172080, 176382, 195980, 235176, 258120, 264573, 293970, 352764, 391960, 440955, 470352, 516240, 529146, 587940, 705528, 783920, 881910, 1058292, 1175880, 1322865, 1411056, 1763820, 2116584, 2351760, 2645730, 3527640, 4233168, 5291460, 7055280, 10582920, 21165840]

約数ペア:

[(1, 21165840), (2, 10582920), (3, 7055280), (4, 5291460), (5, 4233168), (6, 3527640), (8, 2645730), (9, 2351760), (10, 2116584), (12, 1763820), (15, 1411056), (16, 1322865), (18, 1175880), (20, 1058292), (24, 881910), (27, 783920), (30, 705528), (36, 587940), (40, 529146), (41, 516240), (45, 470352), (48, 440955), (54, 391960), (60, 352764), (72, 293970), (80, 264573), (82, 258120), (90, 235176), (108, 195980), (120, 176382), (123, 172080), (135, 156784), (144, 146985), (164, 129060), (180, 117588), (205, 103248), (216, 97990), (239, 88560), (240, 88191), (246, 86040), (270, 78392), (328, 64530), (360, 58794), (369, 57360), (410, 51624), (432, 48995), (478, 44280), (492, 43020), (540, 39196), (615, 34416), (656, 32265), (717, 29520), (720, 29397), (738, 28680), (820, 25812), (956, 22140), (984, 21510), (1080, 19598), (1107, 19120), (1195, 17712), (1230, 17208), (1434, 14760), (1476, 14340), (1640, 12906), (1845, 11472), (1912, 11070), (1968, 10755), (2151, 9840), (2160, 9799), (2214, 9560), (2390, 8856), (2460, 8604), (2868, 7380), (2952, 7170), (3280, 6453), (3585, 5904), (3690, 5736), (3824, 5535), (4302, 4920), (4428, 4780)]