19800356

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{4271}}^1$

素因数の和:4355

約数の個数: 24

約数和(自身を含む): 37080960

約数和(自身を除く): 17280604

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 244, 1159, 2318, 4271, 4636, 8542, 17084, 81149, 162298, 260531, 324596, 521062, 1042124, 4950089, 9900178, 19800356]

約数ペア:

[(1, 19800356), (2, 9900178), (4, 4950089), (19, 1042124), (38, 521062), (61, 324596), (76, 260531), (122, 162298), (244, 81149), (1159, 17084), (2318, 8542), (4271, 4636)]