201821221

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{2239}}^1$

素因数の和:2488

約数の個数: 16

約数和(自身を含む): 235110400

約数和(自身を除く): 33289179

約数列:

[1, 7, 79, 163, 553, 1141, 2239, 12877, 15673, 90139, 176881, 364957, 1238167, 2554699, 28831603, 201821221]

約数ペア:

[(1, 201821221), (7, 28831603), (79, 2554699), (163, 1238167), (553, 364957), (1141, 176881), (2239, 90139), (12877, 15673)]