21598876

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:478

約数の個数: 36

約数和(自身を含む): 41504400

約数和(自身を除く): 19905524

約数列:

[1, 2, 4, 13, 26, 52, 89, 169, 178, 338, 356, 359, 676, 718, 1157, 1436, 2314, 4628, 4667, 9334, 15041, 18668, 30082, 31951, 60164, 60671, 63902, 121342, 127804, 242684, 415363, 830726, 1661452, 5399719, 10799438, 21598876]

約数ペア:

[(1, 21598876), (2, 10799438), (4, 5399719), (13, 1661452), (26, 830726), (52, 415363), (89, 242684), (169, 127804), (178, 121342), (338, 63902), (356, 60671), (359, 60164), (676, 31951), (718, 30082), (1157, 18668), (1436, 15041), (2314, 9334), (4628, 4667)]