19919380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3331}}^1$

素因数の和:3376

約数の個数: 48

約数和(自身を含む): 47021184

約数和(自身を除く): 27101804

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3331, 5980, 6662, 13324, 16655, 33310, 43303, 66620, 76613, 86606, 153226, 173212, 216515, 306452, 383065, 433030, 766130, 866060, 995969, 1532260, 1991938, 3983876, 4979845, 9959690, 19919380]

約数ペア:

[(1, 19919380), (2, 9959690), (4, 4979845), (5, 3983876), (10, 1991938), (13, 1532260), (20, 995969), (23, 866060), (26, 766130), (46, 433030), (52, 383065), (65, 306452), (92, 216515), (115, 173212), (130, 153226), (230, 86606), (260, 76613), (299, 66620), (460, 43303), (598, 33310), (1196, 16655), (1495, 13324), (2990, 6662), (3331, 5980)]