18887520

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{109}}^1$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 63367920

約数和(自身を除く): 44480400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 76, 80, 95, 96, 109, 114, 120, 152, 160, 190, 218, 228, 240, 285, 304, 327, 361, 380, 436, 456, 480, 545, 570, 608, 654, 722, 760, 872, 912, 1083, 1090, 1140, 1308, 1444, 1520, 1635, 1744, 1805, 1824, 2071, 2166, 2180, 2280, 2616, 2888, 3040, 3270, 3488, 3610, 4142, 4332, 4360, 4560, 5232, 5415, 5776, 6213, 6540, 7220, 8284, 8664, 8720, 9120, 10355, 10464, 10830, 11552, 12426, 13080, 14440, 16568, 17328, 17440, 20710, 21660, 24852, 26160, 28880, 31065, 33136, 34656, 39349, 41420, 43320, 49704, 52320, 57760, 62130, 66272, 78698, 82840, 86640, 99408, 118047, 124260, 157396, 165680, 173280, 196745, 198816, 236094, 248520, 314792, 331360, 393490, 472188, 497040, 590235, 629584, 786980, 944376, 994080, 1180470, 1259168, 1573960, 1888752, 2360940, 3147920, 3777504, 4721880, 6295840, 9443760, 18887520]

約数ペア:

[(1, 18887520), (2, 9443760), (3, 6295840), (4, 4721880), (5, 3777504), (6, 3147920), (8, 2360940), (10, 1888752), (12, 1573960), (15, 1259168), (16, 1180470), (19, 994080), (20, 944376), (24, 786980), (30, 629584), (32, 590235), (38, 497040), (40, 472188), (48, 393490), (57, 331360), (60, 314792), (76, 248520), (80, 236094), (95, 198816), (96, 196745), (109, 173280), (114, 165680), (120, 157396), (152, 124260), (160, 118047), (190, 99408), (218, 86640), (228, 82840), (240, 78698), (285, 66272), (304, 62130), (327, 57760), (361, 52320), (380, 49704), (436, 43320), (456, 41420), (480, 39349), (545, 34656), (570, 33136), (608, 31065), (654, 28880), (722, 26160), (760, 24852), (872, 21660), (912, 20710), (1083, 17440), (1090, 17328), (1140, 16568), (1308, 14440), (1444, 13080), (1520, 12426), (1635, 11552), (1744, 10830), (1805, 10464), (1824, 10355), (2071, 9120), (2166, 8720), (2180, 8664), (2280, 8284), (2616, 7220), (2888, 6540), (3040, 6213), (3270, 5776), (3488, 5415), (3610, 5232), (4142, 4560), (4332, 4360)]