18770955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^2$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 36506880

約数和(自身を除く): 17735925

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 97, 105, 133, 285, 291, 399, 485, 665, 679, 1455, 1843, 1995, 2037, 3395, 5529, 9215, 9409, 10185, 12901, 27645, 28227, 38703, 47045, 64505, 65863, 141135, 178771, 193515, 197589, 329315, 536313, 893855, 987945, 1251397, 2681565, 3754191, 6256985, 18770955]

約数ペア:

[(1, 18770955), (3, 6256985), (5, 3754191), (7, 2681565), (15, 1251397), (19, 987945), (21, 893855), (35, 536313), (57, 329315), (95, 197589), (97, 193515), (105, 178771), (133, 141135), (285, 65863), (291, 64505), (399, 47045), (485, 38703), (665, 28227), (679, 27645), (1455, 12901), (1843, 10185), (1995, 9409), (2037, 9215), (3395, 5529)]