2187155

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:238

約数の個数: 16

約数和(自身を含む): 2731968

約数和(自身を除く): 544813

約数列:

[1, 5, 61, 71, 101, 305, 355, 505, 4331, 6161, 7171, 21655, 30805, 35855, 437431, 2187155]

約数ペア:

[(1, 2187155), (5, 437431), (61, 35855), (71, 30805), (101, 21655), (305, 7171), (355, 6161), (505, 4331)]