17809820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5531}}^1$

素因数の和:5570

約数の個数: 48

約数和(自身を含む): 44610048

約数和(自身を除く): 26800228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 5531, 11062, 22124, 27655, 38717, 55310, 77434, 110620, 127213, 154868, 193585, 254426, 387170, 508852, 636065, 774340, 890491, 1272130, 1780982, 2544260, 3561964, 4452455, 8904910, 17809820]

約数ペア:

[(1, 17809820), (2, 8904910), (4, 4452455), (5, 3561964), (7, 2544260), (10, 1780982), (14, 1272130), (20, 890491), (23, 774340), (28, 636065), (35, 508852), (46, 387170), (70, 254426), (92, 193585), (115, 154868), (140, 127213), (161, 110620), (230, 77434), (322, 55310), (460, 38717), (644, 27655), (805, 22124), (1610, 11062), (3220, 5531)]