18983960

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 44651520

約数和(自身を除く): 25667560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 101, 127, 148, 185, 202, 254, 296, 370, 404, 505, 508, 635, 740, 808, 1010, 1016, 1270, 1480, 2020, 2540, 3737, 4040, 4699, 5080, 7474, 9398, 12827, 14948, 18685, 18796, 23495, 25654, 29896, 37370, 37592, 46990, 51308, 64135, 74740, 93980, 102616, 128270, 149480, 187960, 256540, 474599, 513080, 949198, 1898396, 2372995, 3796792, 4745990, 9491980, 18983960]

約数ペア:

[(1, 18983960), (2, 9491980), (4, 4745990), (5, 3796792), (8, 2372995), (10, 1898396), (20, 949198), (37, 513080), (40, 474599), (74, 256540), (101, 187960), (127, 149480), (148, 128270), (185, 102616), (202, 93980), (254, 74740), (296, 64135), (370, 51308), (404, 46990), (505, 37592), (508, 37370), (635, 29896), (740, 25654), (808, 23495), (1010, 18796), (1016, 18685), (1270, 14948), (1480, 12827), (2020, 9398), (2540, 7474), (3737, 5080), (4040, 4699)]