18220440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:329

約数の個数: 128

約数和(自身を含む): 63360000

約数和(自身を除く): 45139560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 109, 120, 140, 168, 199, 210, 218, 280, 327, 398, 420, 436, 545, 597, 654, 763, 796, 840, 872, 995, 1090, 1194, 1308, 1393, 1526, 1592, 1635, 1990, 2180, 2289, 2388, 2616, 2786, 2985, 3052, 3270, 3815, 3980, 4179, 4360, 4578, 4776, 5572, 5970, 6104, 6540, 6965, 7630, 7960, 8358, 9156, 11144, 11445, 11940, 13080, 13930, 15260, 16716, 18312, 20895, 21691, 22890, 23880, 27860, 30520, 33432, 41790, 43382, 45780, 55720, 65073, 83580, 86764, 91560, 108455, 130146, 151837, 167160, 173528, 216910, 260292, 303674, 325365, 433820, 455511, 520584, 607348, 650730, 759185, 867640, 911022, 1214696, 1301460, 1518370, 1822044, 2277555, 2602920, 3036740, 3644088, 4555110, 6073480, 9110220, 18220440]

約数ペア:

[(1, 18220440), (2, 9110220), (3, 6073480), (4, 4555110), (5, 3644088), (6, 3036740), (7, 2602920), (8, 2277555), (10, 1822044), (12, 1518370), (14, 1301460), (15, 1214696), (20, 911022), (21, 867640), (24, 759185), (28, 650730), (30, 607348), (35, 520584), (40, 455511), (42, 433820), (56, 325365), (60, 303674), (70, 260292), (84, 216910), (105, 173528), (109, 167160), (120, 151837), (140, 130146), (168, 108455), (199, 91560), (210, 86764), (218, 83580), (280, 65073), (327, 55720), (398, 45780), (420, 43382), (436, 41790), (545, 33432), (597, 30520), (654, 27860), (763, 23880), (796, 22890), (840, 21691), (872, 20895), (995, 18312), (1090, 16716), (1194, 15260), (1308, 13930), (1393, 13080), (1526, 11940), (1592, 11445), (1635, 11144), (1990, 9156), (2180, 8358), (2289, 7960), (2388, 7630), (2616, 6965), (2786, 6540), (2985, 6104), (3052, 5970), (3270, 5572), (3815, 4776), (3980, 4578), (4179, 4360)]