18716397

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:533

約数の個数: 32

約数和(自身を含む): 29978880

約数和(自身を除く): 11262483

約数列:

[1, 3, 7, 21, 29, 73, 87, 203, 219, 421, 511, 609, 1263, 1533, 2117, 2947, 6351, 8841, 12209, 14819, 30733, 36627, 44457, 85463, 92199, 215131, 256389, 645393, 891257, 2673771, 6238799, 18716397]

約数ペア:

[(1, 18716397), (3, 6238799), (7, 2673771), (21, 891257), (29, 645393), (73, 256389), (87, 215131), (203, 92199), (219, 85463), (421, 44457), (511, 36627), (609, 30733), (1263, 14819), (1533, 12209), (2117, 8841), (2947, 6351)]