18666915

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{887}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 31712256

約数和(自身を除く): 13045341

約数列:

[1, 3, 5, 15, 23, 61, 69, 115, 183, 305, 345, 887, 915, 1403, 2661, 4209, 4435, 7015, 13305, 20401, 21045, 54107, 61203, 102005, 162321, 270535, 306015, 811605, 1244461, 3733383, 6222305, 18666915]

約数ペア:

[(1, 18666915), (3, 6222305), (5, 3733383), (15, 1244461), (23, 811605), (61, 306015), (69, 270535), (115, 162321), (183, 102005), (305, 61203), (345, 54107), (887, 21045), (915, 20401), (1403, 13305), (2661, 7015), (4209, 4435)]