21169440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:323

約数の個数: 144

約数和(自身を含む): 73729656

約数和(自身を除く): 52560216

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 61, 72, 80, 90, 96, 120, 122, 144, 160, 180, 183, 240, 241, 244, 288, 305, 360, 366, 480, 482, 488, 549, 610, 720, 723, 732, 915, 964, 976, 1098, 1205, 1220, 1440, 1446, 1464, 1830, 1928, 1952, 2169, 2196, 2410, 2440, 2745, 2892, 2928, 3615, 3660, 3856, 4338, 4392, 4820, 4880, 5490, 5784, 5856, 7230, 7320, 7712, 8676, 8784, 9640, 9760, 10845, 10980, 11568, 14460, 14640, 14701, 17352, 17568, 19280, 21690, 21960, 23136, 28920, 29280, 29402, 34704, 38560, 43380, 43920, 44103, 57840, 58804, 69408, 73505, 86760, 87840, 88206, 115680, 117608, 132309, 147010, 173520, 176412, 220515, 235216, 264618, 294020, 347040, 352824, 441030, 470432, 529236, 588040, 661545, 705648, 882060, 1058472, 1176080, 1323090, 1411296, 1764120, 2116944, 2352160, 2646180, 3528240, 4233888, 5292360, 7056480, 10584720, 21169440]

約数ペア:

[(1, 21169440), (2, 10584720), (3, 7056480), (4, 5292360), (5, 4233888), (6, 3528240), (8, 2646180), (9, 2352160), (10, 2116944), (12, 1764120), (15, 1411296), (16, 1323090), (18, 1176080), (20, 1058472), (24, 882060), (30, 705648), (32, 661545), (36, 588040), (40, 529236), (45, 470432), (48, 441030), (60, 352824), (61, 347040), (72, 294020), (80, 264618), (90, 235216), (96, 220515), (120, 176412), (122, 173520), (144, 147010), (160, 132309), (180, 117608), (183, 115680), (240, 88206), (241, 87840), (244, 86760), (288, 73505), (305, 69408), (360, 58804), (366, 57840), (480, 44103), (482, 43920), (488, 43380), (549, 38560), (610, 34704), (720, 29402), (723, 29280), (732, 28920), (915, 23136), (964, 21960), (976, 21690), (1098, 19280), (1205, 17568), (1220, 17352), (1440, 14701), (1446, 14640), (1464, 14460), (1830, 11568), (1928, 10980), (1952, 10845), (2169, 9760), (2196, 9640), (2410, 8784), (2440, 8676), (2745, 7712), (2892, 7320), (2928, 7230), (3615, 5856), (3660, 5784), (3856, 5490), (4338, 4880), (4392, 4820)]