20804915890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2351}}^1\times {\mathrm{80449}}^1$

素因数の和:82818

約数の個数: 32

約数和(自身を含む): 40871174400

約数和(自身を除く): 20066258510

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 2351, 4702, 11755, 23510, 25861, 51722, 80449, 129305, 160898, 258610, 402245, 804490, 884939, 1769878, 4424695, 8849390, 189135599, 378271198, 945677995, 1891355990, 2080491589, 4160983178, 10402457945, 20804915890]

約数ペア:

[(1, 20804915890), (2, 10402457945), (5, 4160983178), (10, 2080491589), (11, 1891355990), (22, 945677995), (55, 378271198), (110, 189135599), (2351, 8849390), (4702, 4424695), (11755, 1769878), (23510, 884939), (25861, 804490), (51722, 402245), (80449, 258610), (129305, 160898)]